Peter Singer

Peter Singer (born July 6, 1946) is an Australian moral philosopher and Professor Emeritus of Bioethics at Princeton University. Best known for his groundbreaking 1975 book Animal Liberation, which widely established the philosophical foundation for the modern animal rights movement, he is one of the world's most influential and controversial public ethicists. Writing from a preference utilitarian framework, Singer has shaped contemporary ethical debate through his works on effective altruism, global poverty, and bioethics—most notably in Practical Ethics and The Life You Can Save—where he argues for strict moral obligations toward reducing animal suffering and eradicating extreme human poverty.