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Welcome to the Making Sense Podcast. This is Sam Harris. Today I'm speaking with David Edmunds.

David is a writer and philosopher and the author of several books. The most recent is Parfit,

a philosopher in his mission to save morality. And that is the topic of our conversation.

As many of you know, Derek Parfit was a philosopher I greatly admired. As you'll hear,

I almost interviewed him near the end of his life, but my timing was terrible.

We talk about Parfit's place in philosophy, his work on identity, time bias,

the non-identity problem, which he actually discovered, quite interesting.

Population ethics and the so-called repugnant conclusion,

the ethical importance of future people, effective altruism, moral truth, and other topics.

Anyway, it was fascinating to talk about Parfit and his work with someone who knew him.

So now I bring you David Edmunds.

I am here with David Edmunds. David, thanks for joining me.

Thanks for inviting me.

So you have written a wonderful book. You've actually written two wonderful books,

although we'll focus on the most recent. You may have written more books than that,

...