Peter Singer is often described as the world’s most influential living philosopher. His forty books have appeared in more than twenty-five languages, the most popular being Animal Liberation, written in 1975. Since 1999, he’s been the Ira W. DeCamp Professor of Bioethics in the University Center for Human Values at Princeton University. His new book is The Most Good You Can Do , where he explains what effective altruism is, how it is practiced, and how its followers determine which causes to support. In the book he continues his critique of traditional philanthropy and emphasizes the importance of mindful contribution.

  In his book, Does Altruism Exist?: Culture, Genes, and the Welfare of Others, David Sloan Wilson, one of the world’s leading evolutionists, addresses a question that has puzzled philosophers, psychologists, and evolutionary biologists for centuries: Does altruism exist naturally among the Earth’s creatures?