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Peter Singer Quotes - Page 8

When fish experience something that would cause other animals physical pain, they behave in ways suggestive of pain, and the change in behaviour may last several hours.

Peter Singer (2016). “Ethics in the Real World: 82 Brief Essays on Things That Matter”, p.46, Princeton University Press

The principles of ethics come from our own nature as social, reasoning beings.

Peter Singer (2011). “The Expanding Circle: Ethics, Evolution, and Moral Progress”, p.149, Princeton University Press