Peter Singer

Peter Albert David Singer, AC (born 6 July 1946) is an Australian moral philosopher. He is the Ira W. DeCamp Professor of Bioethics at Princeton University, and a Laureate Professor at the Centre for Applied Philosophy and Public Ethics at the University of Melbourne. He specializes in applied ethics and approaches ethical issues from a secular, utilitarian perspective. He is known in particular for his book, Animal Liberation (1975), a canonical text in animal rights/liberation theory. For most of his career, he supported preference utilitarianism, but in his later years became a classical or hedonistic utilitarian, when co-authoring The Point of View of the Universe with Katarzyna de Lazari-Radek.

Peter, Paul and Mary were an American folk-singing trio whose nearly 50-year career began with their rise to become a paradigm for 1960s folk music. The trio was composed of folk songwriter Peter Yarrow, (Noel) Paul Stookey and Mary Travers. After the death of Travers in 2009, Yarrow and Stookey continued to perform as a duo under their individual names.