Skip to content
Coordinates of ThoughtHome of Philosophy
Join

Thinker · TH-0328

Peter Singer

Peter Singer is an Australian moral philosopher who has taught at Monash University and Princeton University. A utilitarian, he helped make applied ethics a…

b. 1946 · Melbourne, Oxford, Princeton (New Jersey)

Traditions: Analytic

Schools: Utilitarianism

Peter Singer is an Australian moral philosopher who has taught at Monash University and Princeton University. A utilitarian, he helped make applied ethics a working discipline, writing on world poverty, euthanasia and above all the treatment of animals. Animal Liberation argued for equal consideration of interests regardless of species, and in The Expanding Circle he traced the widening of moral concern beyond kin and group.

Key ideas

  • Equal consideration of interests: like interests count equally, whoever's they are.
  • Speciesism, discounting the interests of animals because they belong to another species, is a prejudice comparable to racism.
  • If we can prevent something very bad without sacrificing anything of comparable moral importance, we ought to do it.
  • Moral concern has expanded over history from family and tribe towards all sentient beings.

Major works

  • Famine, Affluence, and Morality (1972)
  • Animal Liberation (1975)
  • Practical Ethics (1979)
  • The Expanding Circle (1981)

In the conversation

In the Journal