Peter Singer is the Ira W. DeCamp Professor of Bioethics in the University Center for Human Values at Princeton University. He specializes in applied ethics and approaches ethical issues from a secular, preference utilitarian perspective. Professor Singer is well-known for his book, Animal Liberation, a canonical text in animal rights/liberation theory. From 2005 on, Professor Singer has also held the part-time position of Laureate Professor at the University of Melbourne, in the Centre for Applied Philosophy and Public Ethics.