Introduction

Peter Singer is a professor of bioethics at the University Center for Human Values at Princeton. He's been very influential on public morality, both with respect to the treatment of animals and in this growing movement known as Effective Altruism. We spend the first half hour or so talking about how it's possible to talk about moral truth. And if you're not really worried about how we can ground our morality in universal truth claims, you might skip 30 minutes later.