"What one generation finds ridiculous, the next accepts; and the third shudders when it looks back on what the first did." ― Peter Singer From Peter Singer Philosopher Added on 1/31/2026 About Peter Singer Peter Singer is an Australian moral philosopher known for work in applied ethics, especially animal ethics, global poverty, and bioethics. His books include Animal Liberation and Practical Ethics. Born: 1946-07-06 View all quotes from Peter Singer