Peter Singer was the founding President of the International Association of Bioethics, and with Helga Kuhse, founding co-editor of the journal Bioethics. He first became well-known internationally after the publication of Animal Liberation. Henry Spira and the Animal Rights Movement. His works have appeared in nineteen languages. He is the author of the major article on ethics in the current edition of the Encyclopaedia Britannica.
Singer is a preference utilitarian.
The preference utilitarian approach to ethical issues regards an action as ethically correct if it satisfies those affected and has the best consequences for the greatest number of people.