Tag Archives: Philosophy

William Lane Craig lectures on naturalism at the University of St. Andrews

Lets take a closer look at a puzzle
Lets take a closer look at a puzzle

Note: even if you have heard Dr. Craig’s arguments before, I recommend jumping to the 48 minutes of Q&A time, which starts 72 minutes in.

About Dr. William Lane Craig:

William Lane Craig (born August 23, 1949) is an American analytic philosopher, philosophical theologian, and Christian apologist. He is known for his work on the philosophy of time and the philosophy of religion, specifically the existence of God and the defense of Christian theism. He has authored or edited over 30 books including The Kalam Cosmological Argument (1979), Theism, Atheism and Big Bang Cosmology(co-authored with Quentin Smith, 1993), Time and Eternity: Exploring God’s Relationship to Time (2001), and Einstein, Relativity and Absolute Simultaneity (co-edited with Quentin Smith, 2007).

Craig received a Bachelor of Arts degree in communications from Wheaton College, Illinois, in 1971 and two summa cum laudemaster’s degrees from Trinity Evangelical Divinity School in Deerfield, Illinois, in 1975, in philosophy of religion and ecclesiastical history. He earned a Ph.D. in philosophy under John Hick at the University of Birmingham, England in 1977 and a Th.D. underWolfhart Pannenberg at the University of Munich, Germany in 1984.

Dr. Craig was in Scotland to lecture at a physics conference, but a local church organized this public lecture at the University of St. Andrews.

Here is the full lecture with Q&A: (2 hours)


  • Naturalism defined: the physical world (matter, space and time) is all that exists
  • Dr. Craig will present 7 reasons why naturalism is false
  • 1) the contingency argument
  • 2) the kalam cosmological argument
  • 3) the fine-tuning of the universe for intelligent life
  • 4) the moral argument
  • 5) the ontological argument
  • 6) the resurrection of Jesus
  • 7) religious experience

Dr. Craig does mention an 8th argument early in the Q&A – the argument from the non-physicality of mental states (substance dualism), which is an argument that I find convincing, because a materialist conception of mind is not compatible with rationality, consciousness and moral agency.

Questions and Answers

He gets a couple of questions on the moral argument early on – one of them tries to put forward an evolutionary explanation for “moral” behaviors. There’s another question the definition of naturalism. There is a bonehead question about the non-existence of Jesus based on a Youtube movie he saw – which Craig responds to with agnostic historian Bart Ehrman’s book on that topic. There’s a question about God as the ground for morality – does morality come from his will or nature.

Then there is a question about the multiverse, which came up at the physics conference Dr. Craig attended the day before. There is a good question about the Big Bang theory and the initial singularity at time t=0. Another good question about transfinite arithmetic, cardinality and set theory. One questioner asks about the resurrection argument. The questioner asks if we can use the origin of the disciples belief as an argument when other religions have people who are willing to die for their claims. One of the questioners asks about whether the laws of nature break down at 10^-43 after the beginning of the universe. There is a question about the religious experience argument, and Craig has the opportunity to give his testimony.

I thought that the questions from the Scottish students and faculty were a lot more thoughtful and respectful than at American colleges and universities. Highly recommended.

What got me started on apologetics? William Lane Craig debate transcripts

William Lane Craig lecturing to university students
William Lane Craig lecturing to university students

Yes, William Lane Craig debate transcripts. In fact, I still read them from time to time to keep up my skills.

Here’s one of my favorites, the Craig-Nielsen debate on grounding morality without God


William Lane Craig and Kai Nielsen
with annotations by William Lane Craig
February 1991, University of Western Ontario

Best part:

Finally, he raises the issue of immortality and says, “Death doesn’t undermine moral values. In fact, things that we value become all the more precious.” Well, in one sense he’s right. It’s the absence of God that undermines the objectivity of moral values, not death. But let’s suppose that there are objective moral values. What would be undermined by the lack of immortality? I think two things.

First, I think there would be no reason to adopt the moral point of view. Since you’re going to die, everyone ends up the same. It doesn’t make any difference whether you live as a Hitler or a Mother Teresa. There is no relationship between your moral living and your ultimate fate. And so in that sense, death undermines the reason for adopting the moral point of view rather that just being an egoist and living for self.

Second, there’s no basis for self-sacrifice on this point of view. Why should an atheist, who knows everything is going to end in death, do things that are morally right that go against self-interest? For example, a few years ago there was a terrible mid-winter air disaster in Washington, DC, as a plane crashed into a bridge spanning the Potomac River, spilling its passengers into the icy waters. And as the helicopters came to rescue these people, attention focused on one man who again and again passed by the rope ladder rather than be pulled to safety himself. Seven times he did this, and when they came again, he was gone. The whole nation turned its eyes to this man in respect and admiration for the noble act of self-sacrifice that he did. And yet on the atheistic view, that man wasn’t noble. He did the stupidest thing possible. He should have gone for the rope ladder first, pushed others away, if necessary, in order to survive! But to give up all the brief existence he will ever have for others he didn’t even know? Why? It seems to me, then, that it’s not simply the absence of God that undermines objective moral values, but ethical living is also undermined by the atheistic point of view because you then have no reason to adopt the moral point of view and you have no basis for acts of self-sacrifice.

By contrast, on the Christian view, where you have both God and immortality, you have the necessary presuppositions for the affirmation of objective moral values and for consistent living of the ethical life.

And another of my favorites, the Craig-Taylor debate on the ontological grounding of morality.


Is The Basis Of Morality Natural Or Supernatural?
Richard Taylor and William Lane Craig
October 1993, Union College, Schenectady, New York

Sample Craig:

(2) I argued that moral accountability also exists under the supernaturalist view, and Professor Taylor didn’t deny the point.

(II) What about my critique, then, of naturalism? I said that naturalism doesn’t provide a sound foundation for morality, and here I made two points:

(1) On the naturalist view, objective right and wrong do not exist. Again, Professor Taylor doesn’t deny this point; he just says, “Well, to say that they’re conventional doesn’t mean they’re contemptible.” Well, granted; but it does mean they’re arbitrary, they’re non–objective. There’s no more difference between moral right and wrong than driving on the right–hand side of the road versus the left–hand side of the road. It’s simply a societal convention. And the modern evolutionist thinks these conventions are just based in socio–biological evolution. According to Michael Ruse, a professor of the philosophy of science,

The position of the modern evolutionist…is that humans have an awareness of morality…because such an awareness is of biological worth. Morality is a biological adaptation, no less than are hands and feet and teeth…. Considered as a rationally justifiable set of claims about an objective something, [ethics] is illusory. I appreciate that when somebody says, ‘Love thy neighbor as thyself,’ they think they are referring above and beyond themselves…. Nevertheless…such reference is truly without foundation. Morality is just an aid to survival and reproduction and…any deeper meaning is illusory….{26}

This is essentially the same view as Professor Taylor’s. Moral values are simply rooted in socio–biological evolution, that have passed down as certain taboos and certain commands, but they have no objective validity in terms of their moral rightness or wrongness. Professor Taylor says, “But I have a high regard for people who are truly moral and decent.” I don’t deny that. Of course he does! But the point is that in his ethics, in his philosophy, he has no basis for that affirmation. What I bring is not a new set of values—I think we pretty much hold those in common—but I’m offering a secure foundation for those values that we all want to hold dear.

You see, on Professor Taylor’s view, there really isn’t any objective morality. I think every one of us here tonight would agree that it’s wrong to kill babies and that the holocaust was morally wrong. But in his book Professor Taylor says, “The infanticide practiced by the Greeks of antiquity did not violate their customs. If we say it was nevertheless wrong, we are only saying that it is forbidden by our ethical and legal rules. And the abominations practiced by the Nazis…are forbidden by our rules, and not, obviously, by theirs.”{27} I submit that that is simply a patently false view of moral values and that naturalism, therefore, can’t provide any objective basis for right and wrong.

And another of my favorites, the Craig-Tooley debate on the problem of evil.


A Classic Debate on the Existence of God
Dr. William Lane Craig & Dr. Michael Tooley
November 1994, University of Colorado at Boulder

Sample Craig:

(2) Christian doctrines increase the probability of the coexistence of God and the evils in the world. Let me just mention a couple of these.

(i) On the Christian view, the purpose of life is not happiness as such in this life. Rather it is the knowledge of God—which will ultimately produce true and everlasting happiness. What that means is that many evils occur in this life which might be utterly pointless with respect to producing human happiness. But they might not be pointless with respect to producing the knowledge of God. Dr. Tooley assumes when he talks about changes that would make this world a better place, that the purpose of life is basically to be happy in this life. And I certainly admit that you could make changes that might appear to make this life a better place, make it happier. But that’s not God’s purpose. So if you understand that the purpose of life is not happiness as such, I think that you can see that the existence of evil doesn’t necessarily cast any improbability upon God’s existence.

(ii) It’s also the Christian view that God’s purpose spills over into eternal life. In the afterlife God will bestow a glory and happiness upon us that is incomparable to what we’ve suffered here on earth. And the longer we spend in eternity with Him, the more the sufferings in this life shrink by comparison to an infinitesimal instant. Dr. Tooley admits in his article that it is possible that immortality could justify such evils. But, he says, it’s “very unlikely” that there is life after death. Well, I have two comments. First, I’d like him to prove that it’s unlikely that there is life after death.{26} Second, I suggest that the resurrection of Jesus gives us grounds for hoping in life after death, and I’ve attempted to justify that historically. So given these Christian doctrines, I think you can see that the existence of God and evil is not so improbable after all.


(4) Finally, I think that there is actually an argument for God from evil. It would go like this:

(i) If God does not exist, objective moral values do not exist. If there is no God, moral values are either socio-biological by-products or just expressions of personal preference.

(ii) Evil exists. That’s the premise of the atheist. There is real evil in the world.

(iii) Therefore, objective values do exist. Some things are really wrong.

(iv) Therefore, God exists.

Thus the presence of evil in the world actually demonstrates God’s existence because in the absence of God, there wouldn’t be any distinction objectively between good and evil, between right and wrong. So although evil in one sense calls into question God’s existence, in a much deeper sense, I think, it actually requires God’s existence.

So in the light of these four responses, I think that the argument from evil, as difficult and emotionally pressing as it might be, in the end doesn’t constitute a good argument against the existence of God. So I think the four arguments given against the existence of God by Dr. Tooley are inconclusive. You’ve still got my six arguments for God’s existence, and therefore I still think that on balance the evidence favors theism as the more rational worldview.

There are more debate transcripts on Craig’s Reasonable Faith web site.

Can atheists help themselves to objective morality on atheism?

A conflict of worldviews
A conflict of worldviews

Here’s Dr. William Lane Craig explaining why atheists can’t help themselves to objective morality, given a worldview of atheism:

He presents 3 reasons why in the video, all of which are also discussed in his Defenders class:

The mention of Plato brings to mind another possible atheistic response to the first premise of the moral argument that if God does not exist, then objective moral values and duties do not exist. Plato thought that the Good just exists as a sort of self-subsistent idea, as an entity in and of itself. Indeed, it is the most real thing in reality. The Good simply exists. If you find this difficult to grasp, join the company! Nevertheless, that is what Plato believed. Later Christian thinkers, like Augustine, equated Plato’s Good with the nature of God. God’s nature is the Good, and so it was anchored in a concrete object, namely, God. But for Plato, at least, the Good just sort of existed on its own as a kind of self-existent idea.

Some atheists might say that moral values, like Justice, Mercy, Love, and Forbearance, just exist all on their own as sort of abstract moral objects. They have no other foundation; they just exist. We can call this view Atheistic Moral Platonism. According to this view, moral values are not grounded in God. They just exist all on their own.

Unintelligibility of Atheistic Moral Platonism

What might we say by way of response to Atheistic Moral Platonism? Let me make three responses. First, it seems to me that this view is just unintelligible. I simply don’t understand what it means. What does it mean, for example, to say that the moral value Justice just exists? I understand what it means to say that a person is just or that some action is just, but what does it even mean to say that in the absence of any persons or any objects at all, that Justice just exists? It is hard to understand even what this means. Moral values seem to be properties of persons, and so it is hard to understand how Justice can just exist as a sort of abstraction.

Lack of Moral Obligation on Atheistic Moral Platonism

Secondly, a major weakness of this view is that it provides no basis for objective moral duties. Let’s suppose, for the sake of argument, that moral values like Justice, Love, Forbearance, and Tolerance just exist on their own. Why would that lay any sort of moral obligation upon me? Why would the existence of this realm of ideas make it my duty to be, say, merciful or loving? Who or what lays such an obligation upon me? Why would I have the moral duty to be merciful or loving? Notice that on this view moral vices like Greed, Hatred, and Selfishness presumably also exist as abstractions. In the absence of any moral law giver, what obligates me to align my life with one set of these abstract ideas rather than with some other set of abstract ideas? There just doesn’t seem to be any basis at all for moral duty in this view. In the absence of a moral law giver, Atheistic Moral Platonism lacks any basis for moral obligation.

Improbability of Atheistic Moral Platonism

Finally, thirdly, it is fantastically improbable that the blind evolutionary process should spit forth exactly those kinds of creatures that align with the existence of this realm of abstract values.1 Remember that they have no relationship with each other at all. The natural realm and this abstract moral realm are completely separate. And yet, lo and behold, the natural realm has by chance alone evolved exactly those kind of creatures whose lives align with these moral duties and values. This seems to be an incredible coincidence when you think about it. It is almost as if the moral realm knew that we were coming! I think it is a far more plausible view to say that both the natural realm and the moral realm are under the sovereignty of a divine being, who is both the creator of natural laws that govern the physical universe and whose commands constitute the moral laws that govern our ethical duties. This is a more coherent view of reality. Theism is a more coherent view because these two realms of reality don’t fall apart in this disjointed way. They are both under the sovereignty of a single natural and moral law giver.

For those three reasons, Atheistic Moral Platonism is a less plausible view than theistic based ethics such as I have been defending.

And now, I must be mean to the atheists, because I think this me too nonsense is just ridiculous, desperate intellectual dishonesty.

I remember having a conversation with one of my IT project managers who was an atheist, and she asked me what I thought would happen to dogs when they died. I said “well they don’t have an afterlife so they just rot away when we bury them and get eaten by worms”. She was aghast and said “no they don’t, they go to Heaven”. That was just her wishful thinking, there. And that’s what morality on atheism is: wishful thinking. It’s just an appearance package that gets bolted on absolute meaninglessness and hedonism. And even if the atheist tries to make traditional decisions in their own lives, they typically push for full-on dismantling of Judeo-Christian values, especially in the sexual realm. And that spills over into abortion, divorce, same-sex marriage and government restraints on free speech, conscience and religious liberty.

Dear atheists: you cannot duct tape morality onto nihilism and have it be rational. We know you’re doing it to feel good about yourselves and to appear normal instead of wearing your nihilism openly. But your faked morality is not even close to the morality of theists, and especially not of Christian theists. Christians go against their self-interest because we imitate the self-sacrificial love of Christ, who gave himself as a ransom to save others. That makes no sense on an atheistic worldview, since this life is all you have, and there is no afterlife where your actions are in the context of a relationship with that self-sacrificial Son of God. In any case, free will doesn’t exist on atheism, so that means no moral choices regardless. These are the common sense implications of atheist first principles, and in fact that’s what you hear expressed from the finest atheist scholars: no free will, no right and wrong, no life after death.

If you want to see what atheists really think about morality, then take a look at this post featuring Matt Dillahunty, where he is asked to condemn the Holocaust as objectively wrong, and he refuses to do it. That’s intellectually consistent atheist morality right there. If the universe is an accident, and human beings evolved by accident, then there is way things ought to be, and no way we ought to act. And no one is there is no ongoing two-way relationship for our conduct to be part of, anyway. On atheism, human beings will die out individually and collectively in the heat death of the universe. Once the heat death of the universe arrives, there will be no one left to care how we lived after we’re dead – there is no one waiting for us who cares how we act towards him and towards others. Atheists can arbitrarily put any limits they want on their actions, based on what makes them feel good, and what makes people like them, perhaps taking account the arbitrary customs and conventions of the time and place they find themselves in. But it’s delusional and irrational make-believe for atheists to claim that morality is rational on their worldview.

Positive arguments for Christian theism

William Lane Craig debates Austin Dacey: Does God Exist?

Two tough rams butt heads, and may the best ram win!
Two tough rams butt heads, and may the best ram win!

Here is the video and summary of a debate between Christian theist William Lane Craig and Austin Dacey at Purdue University in 2004 about the existence of God.

The debaters:

The video: (2 hours)

The video shows the speakers and powerpoint slides of their arguments. Austin Dacey is one of the top atheist debaters, and I would put him second to Peter Millican alone, with Walter Sinnott-Armstrong in third place. This is the debate to show people who are new to apologetics. The debate with Peter Millican is better for advanced students, and that’s no surprise since he teaches at Oxford University and is familiar with all of Dr. Craig’s work. The Craig-Dacey debate is the one that I give to my co-workers.

By the way, you can get the DVDs and CDs for the first Craig-Dacey debate and the second Craig-Dacey debate and the second Craig-Sinnott-Armstrong debate. The Peter Millican debate is not available on DVD, but the link above (Peter Millican) has the video and my summary.

Dr. Dacey’s 5 arguments below are all good arguments that you find in the academic literature. He is also an effective and engaging speaker, This is a great debate to watch!

SUMMARY of the opening speeches:

Dr. Craig’s opening statement:

Dr. Craig will present six reasons why God exists:

  1. (Contingency argument) God is the best explanation of why something exists rather than nothing
  2. (Cosmological argument)  God’s existence is implied by the origin of the universe
  3. (Fine-tuning argument) The fine-tuning of the universe for intelligent life points to a designer of the cosmos
  4. (Moral argument) God is the best explanation for the existence of objective moral values and objective moral duties
  5. (Miracles argument) The historical facts surrounding the life, death and resurrection of Jesus
  6. (Religious experience) God’s existence is directly knowable even apart from arguments

Dr. Dacey’s opening argument:

There are two ways to disprove God’s existence, by showing that the concept of God is self-contradictory, or by showing that certain facts about ourselves and the world are incompatible with what we would expect to be true if God did exist. Dr. Dacey will focus on the second kind of argument.

  1. The hiddenness of God
  2. The success of science in explaining nature without needing a supernatural agency
  3. The dependence of mind on physical processes in the brain
  4. Naturalistic evolution
  5. The existence of gratuitous / pointless evil and suffering

One final point:

One thing that I have to point out is that Dr. Dacey quotes Brian Greene during the debate to counter Dr. Craig’s cosmological argument. Dr. Craig could not respond because he can’t see the context of the quote. However, Dr. Craig had a rematch with Dr. Dacey where was able to read the context of the quote and defuse Dr. Dacey’s objection. This is what he wrote in his August 2005 newsletter after the re-match:

The following week, I was off an another three-day trip, this time to California State University at Fresno. As part of a week of campus outreach the Veritas Forum scheduled a debate on the existence of God between me and Austin Dacey, whom I had debated last spring at Purdue University. In preparation for the rematch I adopted two strategies: (1) Since Dacey had come to the Purdue debate with prepared speeches, I decided to throw him for a loop by offering a different set of arguments for God, so that his canned objections wouldn’t apply. I chose to focus on the cosmological argument, giving four separate arguments for the beginning of the universe, and on the evidence for Jesus’ resurrection. (2) I reviewed our previous debate carefully, preparing critiques of his five atheistic arguments. In the process I found that he had seriously misunderstood or misrepresented a statement by a scientist on the Big Bang; so I brought along the book itself in case Dacey quoted this source again. I figured he might change his arguments just as I was doing; but I wanted to be ready in case he used his old arguments again.

[…]The auditorium was packed that night for the debate, and I later learned that there were overflow rooms, too. To my surprise Dr. Dacey gave the very same case he had presented at Purdue; so he really got clobbered on those arguments. Because he wasn’t prepared for my new arguments, he didn’t even respond to two of my arguments for the beginning of the universe, though he did a credible job responding to the others. I was pleased when he attacked the Big Bang by quoting the same scientist as before, because I then held up the book, specified the page number, and proceeded to quote the context to show what the scientist really meant.

Dr. Craig is always prepared!

Will computers and robots ever become self-aware?

Lets take a closer look at a puzzle
Lets take a closer look at a puzzle

There is a very famous thought experiment from UC Berkeley philosopher John Searle that all Christian apologists should know about. And now everyone who reads the Wall Street Journal knows about it, because of this article.

In that article, Searle is writing about the IBM computer that was programmed to play Jeopardy. Can a robot who wins on Jeopardy be “human”? Searle says no. And his famous Chinese room example (discussed in the article) explains why.


Imagine that a person—me, for example—knows no Chinese and is locked in a room with boxes full of Chinese symbols and an instruction book written in English for manipulating the symbols. Unknown to me, the boxes are called “the database” and the instruction book is called “the program.” I am called “the computer.”

People outside the room pass in bunches of Chinese symbols that, unknown to me, are questions. I look up in the instruction book what I am supposed to do and I give back answers in Chinese symbols.

Suppose I get so good at shuffling the symbols and passing out the answers that my answers are indistinguishable from a native Chinese speaker’s. I give every indication of understanding the language despite the fact that I actually don’t understand a word of Chinese.

And if I do not, neither does any digital computer, because no computer, qua computer, has anything I do not have. It has stocks of symbols, rules for manipulating symbols, a system that allows it to rapidly transition from zeros to ones, and the ability to process inputs and outputs. That is it. There is nothing else.

Here is a link to the full article by John Searle on the Chinese room illustration.

By the way, Searle is a naturalist – not a theist, not a Christian. Now, let’s hear from a Christian scholar who can make more sense of this for us.

Here’s a related article on “strong AI” by Christian philosopher Jay Richards.


Popular discussions of AI often suggest that if you keep increasing weak AI, at some point, you’ll get strong AI. That is, if you get enough computation, you’ll eventually get consciousness.

The reasoning goes something like this: There will be a moment at which a computer will be indistinguishable from a human intelligent agent in a blind test. At that point, we will have intelligent, conscious machines.

This does not follow. A computer may pass the Turing test, but that doesn’t mean that it will actually be a self-conscious, free agent.

The point seems obvious, but we can easily be beguiled by the way we speak of computers: We talk about computers learning, making mistakes, becoming more intelligent, and so forth. We need to remember that we are speaking metaphorically.

We can also be led astray by unexamined metaphysical assumptions. If we’re just computers made of meat, and we happened to become conscious at some point, what’s to stop computers from doing the same? That makes sense if you accept the premise—as many AI researchers do. If you don’t accept the premise, though, you don’t have to accept the conclusion.

In fact, there’s no good reason to assume that consciousness and agency emerge by accident at some threshold of speed and computational power in computers. We know by introspection that we are conscious, free beings—though we really don’t know how this works. So we naturally attribute consciousness to other humans. We also know generally what’s going on inside a computer, since we build them, and it has nothing to do with consciousness. It’s quite likely that consciousness is qualitatively different from the type of computation that we have developed in computers (as the “Chinese Room” argument, by philosopher John Searle, seems to show). Remember that, and you’ll suffer less anxiety as computers become more powerful.

Even if computer technology provides accelerating returns for the foreseeable future, it doesn’t follow that we’ll be replacing ourselves anytime soon. AI enthusiasts often make highly simplistic assumptions about human nature and biology. Rather than marveling at the ways in which computation illuminates our understanding of the microscopic biological world, many treat biological systems as nothing but clunky, soon-to-be-obsolete conglomerations of hardware and software. Fanciful speculations about uploading ourselves onto the Internet and transcending our biology rest on these simplistic assumptions. This is a common philosophical blind spot in the AI community, but it’s not a danger of AI research itself, which primarily involves programming and computers.

AI researchers often mix topics from different disciplines—biology, physics, computer science, robotics—and this causes critics to do the same. For instance, many critics worry that AI research leads inevitably to tampering with human nature. But different types of research raise different concerns. There are serious ethical questions when we’re dealing with human cloning and research that destroys human embryos. But AI research in itself does not raise these concerns. It normally involves computers, machines, and programming. While all technology raises ethical issues, we should be less worried about AI research—which has many benign applications—than research that treats human life as a means rather than an end.

When I am playing a game on the computer, I know exactly why what I am doing is fun – I am conscious of it. But the computer has no idea what I am doing. It is just matter in motion, acting on it’s programming and the inputs I supply to it. And that’s all computers will ever do. Trust me, this is my field. I have the BS and MS in computer science, and I have studied this area. AI has applications for machine learning and search problems, but consciousness is not on the radar. You can’t get there from here.