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Science does not stand still, and neither does philosophy, although the latter has a tendency to walk in circles.

— Peter Singer The Expanding Circle: Ethics, Evolution, and Moral Progress (1981)

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More quotes by Peter Singer

If evolution is a struggle for survival, why hasn't it ruthlessly eliminated altruists, who seem to increase another's prospects of survival at the cost of their own?

The Expanding Circle: Ethics, Evolution, and Moral Progress (1981)

Since ancient times, philosophers have maintained that to strive too hard for one's own happiness is self-defeating.

The Expanding Circle: Ethics, Evolution, and Moral Progress (1981)

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

The Expanding Circle: Ethics, Evolution, and Moral Progress (1981)

There can be no brotherhood when some nations indulge in previously unheard of luxuries, while others struggle to stave off famine.

The Expanding Circle: Ethics, Evolution, and Moral Progress (1981)

Ethics seems a morass which we have to cross, but get hopelessly bogged in when we make the attempt.

The Expanding Circle: Ethics, Evolution, and Moral Progress (1981)

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The most merciful thing in the world, I think, is the inability of the human mind to correlate all its contents.

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All religions, arts and sciences are branches of the same tree. All these aspirations are directed toward ennobling man's life, lifting it from the sphere of mere physical existence and leading the individual towards freedom.

Albert Einstein Moral Decay (1937)

Science and religion are two human enterprises sharing many features.

Freeman Dyson Infinite in All Directions (1988)

To doubt everything or to believe everything are two equally convenient solutions; both dispense with the necessity of reflection.

Henri Poincaré Science and Hypothesis (1901)

Attribution

Quote text and notes from Wikiquote: Peter Singer (page history), available under CC BY-SA 4.0. Source quality and labels are our own summary of what Wikiquote records.