Pulitzer Prize-winning biographer Jon Meacham on the evolution of Abraham Lincoln's moral principles and political leadership -- and what the era of Lincoln can teach us about the state of our democracy today.
Peter Singer is a philosopher and professor of bioethics at Princeton University. He’s most famous for his book "Animal Liberation," which was one of the seminal texts of the animal rights movement. He’s also highly controversial for his views on euthanasia and the responsibility of the world’s affluent for the world’s poor. He talks with Diane about his new book, which brings together for the first time his most influential writings.
- Peter Singer Author, philosopher, and professor of bioethics at Princeton University
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