Category Archives: Apologetics

Plantinga Drains Russell’s Teapot

Alvin Plantinga on Russell’s teapot, from a 2014 interview by Gary Gutting:

G.G.: You say atheism requires evidence to support it. Many atheists deny this, saying that all they need to do is point out the lack of any good evidence for theism. You compare atheism to the denial that there are an even number of stars, which obviously would need evidence. But atheists say (using an example from Bertrand Russell) that you should rather compare atheism to the denial that there’s a teapot in orbit around the sun. Why prefer your comparison to Russell’s?

A.P.: Russell’s idea, I take it, is we don’t really have any evidence against teapotism, but we don’t need any; the absence of evidence is evidence of absence, and is enough to support a-teapotism. We don’t need any positive evidence against it to be justified in a-teapotism; and perhaps the same is true of theism.

I disagree: Clearly we have a great deal of evidence against teapotism. For example, as far as we know, the only way a teapot could have gotten into orbit around the sun would be if some country with sufficiently developed space-shot capabilities had shot this pot into orbit. No country with such capabilities is sufficiently frivolous to waste its resources by trying to send a teapot into orbit. Furthermore, if some country had done so, it would have been all over the news; we would certainly have heard about it. But we haven’t. And so on. There is plenty of evidence against teapotism. So if, à la Russell, theism is like teapotism, the atheist, to be justified, would (like the a-teapotist) have to have powerful evidence against theism.

Plantinga goes on to discuss whether there is such evidence, whether there are any good arguments for or against atheism, and whether theistic beliefs need to be justified by philosophical arguments. He concludes with a nice summary of his Evolutionary Argument Against Naturalism.

Why Campus Ministry Is So Challenging

Christian evangelistic ministry on college and university campuses is incredibly important, but also extremely challenging. Why is that? Is it because college students are typically smarter and better educated than the average person, so that campus ministers have be equipped to deal with serious intellectual objections to the Christian faith?

Generally, no. It’s challenging mainly because too many college students have had their God-given minds so warped by relativism and postmodern anti-realism (the view that ‘reality’ is defined by how we choose to think and speak about the world) that they will cheerfully deny what’s plainly obvious for the sake of political correctness.

Further evidence of the problem appeared in my Twitter feed this morning:

I’d love to think this is a spoof, but it isn’t. (Sadly, despite what the students in the video suggest, I can’t make something true merely by wishing or thinking that it’s true!) Behold the rotten fruit of the sexual revolution and its repudiation of a biblical worldview.

A Reductio of Naturalism

Keep Calm and Study PhysicsLet’s define Naturalism as the view that everything is either physical or causally dependent on the physical. On this definition, Naturalism encompasses both “hard naturalism” (strict reductive physicalism) and “soft naturalism” (which allows for some non-physical things such as minds, provided those non-physical things are causally dependent on physical things).

For completeness, let’s also define physical as a catch-all term for those entities and properties recognized by modern physics (subatomic particles, forces, etc.) or any reasonable refinement thereof (i.e., any refinement that doesn’t introduce radically different ontological categories). On this view, whatever is physical must be spatiotemporal.

I now offer a reductio ad absurdum of Naturalism, as defined above, which deduces the non-truth of Naturalism from its truth.

  1.  Naturalism is true. [assumption for reductio]
  2. If Naturalism is true, then Naturalism is possibly true.
  3. If Naturalism is possibly true, then, necessarily, Naturalism is possibly true.
  4. Necessarily, Naturalism is possibly true. [from 1, 2, 3]
  5. There is at least one necessary truth. [from 4]
  6. There is at least one necessarily true proposition. [from 5]
  7. Necessarily, if some proposition P is true, then P exists.
  8. If some proposition P is necessarily true, then P necessarily exists. [from 7]
  9. There is at least one necessarily existent proposition. [from 6, 8]
  10. There is something that does not exist contingently. [from 9]
  11. If Naturalism is true, then everything that exists, exists contingently.
  12. Not everything that exists, exists contingently. [from 10]
  13. Naturalism is not true. [from 11, 12]

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A Model Christian-Muslim Discussion

Recently I watched the two-part discussion between Dr. James White, President of Alpha & Omega Ministries, and Imam Muhammad Musri, President of the Islamic Society of Central Florida, which took place on March 21, 2015, at Reformed Theological Seminary in Orlando.

If you’re looking for a good introduction to the defining issues between Christianity and Islam, and the arguments offered on either side, I highly recommend you take the time to watch the two videos below. Trust me: it will be 3½ hours very well spent. (Especially if you watch them while using an elliptical, as I did.)

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A Response to Some Criticisms of WYW

A couple of months ago I received a polite and thoughtful email from a student at Princeton University with some criticisms of my little book What’s Your Worldview?. I’m reproducing the email here (with the author’s permission) with my responses interspersed.

I recently picked up and read your book What’s Your Worldview? The questions you posed were fascinating—I always love these kinds of philosophical questions. I also enjoyed the fact that the book is meant to be an “interactive” guide to the discovery of a worldview (no doubt a complex task).

I respect your worldview. However, I found your presentation of the opposing views to be highly biased. I do not fault you for being biased; as you say in your introduction, we are all unavoidably biased (“Does that mean the whole book is biased? Well, sure!”). I disagree, however, that bias cannot be hidden (or at least, not so obviously flaunted as it is here).

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Two-Headed, Four-Legged Women

Last week a shocking video was released which showed the Senior Director of Medical Services for Planned Parenthood, Dr. Deborah Nucatola, casually discussing how to perform abortions so that the murdered baby’s body parts can be preserved and sold for medical research. A second video was released today by the Center for Medical Progress which features another of Planned Parenthood’s top doctors, Dr. Mary Gatter, apparently negotiating over the price of organs harvested from aborted babies.

This is truly horrific material, even if we should not be surprised given what we already know about how the abortion industry operates. So much could be said about the ethical and political dimensions, and most of it has already been said by others more eloquent than me. (I particularly appreciated Brit Hume’s short but hard-hitting commentary.) However, I do have one observation to add to the discussion, which I haven’t yet come across elsewhere.

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Bugs, Features, and Atheism

A short article written for The Gospel Coalition.

Is It Arrogant to Claim to Know God?

In a debate with Rabbi David Wolpe in 2008, the late Christopher Hitchens inveighed against Wolpe’s claim to have knowledge of God:

By what right, rabbi, do you say that you know God better than they do, that your God is better than theirs, that you have an access that I can’t claim to have, to knowing not just that there is a God, but that you know his mind. You put it modestly, but it is a fantastically arrogant claim that you make — an incredibly immodest claim.

I was reminded of Hitchens’ objection, and similar ones in his exchanges with Douglas Wilson, when I saw the following tweet by proselytizing atheist Peter Boghossian (retweeted, presumably with approval, by Richard Dawkins):

I take it Boghossian doesn’t mean exactly what he says here, because as a matter of fact some people have made both claims. Rather, his point is that one cannot consistently make both claims. Why? Apparently because he thinks it’s inherently prideful or arrogant to claim to know God’s will. The same would go for the claim to know other things about God, such as his purposes for us and for the universe as a whole. And of all things what could be more arrogant than the claim of Christians to know God personally?

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On Worldviews (Tabletalk)

A short article I wrote for Tabletalk magazine, entitled “On Worldviews”, is available online, along with some other articles from the December 2014 issue. Check them out! (And while you’re at it, consider a subscription to Tabletalk. It’s an excellent resource.)

Where Are the Muslim Doctors and Nurses?

For a couple of years now, I’ve taught a course entitled Christian Encounter with Islam. One of the major themes of the course, as you might expect, is the contrast between the Christian worldview and its distinctive view of God, and the Islamic worldview and its distinctive view of God. In light of that contrast I was particularly struck by the following section (pp. 220-22) from the recently published book Dispatches From the Front, a missions travelogue by Tim Keesee. (Pay close attention to the third paragraph.) Continue reading