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It seems to me immensely unlikely that mind is a mere by-product of matter. For if my mental processes are determined wholly by the motions of atoms in my brain I have no reason to suppose that my beliefs are true. They may be sound chemically, but that does not make them sound logically. And hence I have no reason for supposing my brain to be composed of atoms.

— J. B. S. Haldane Possible Worlds and Other Essays (1927)

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More quotes by J. B. S. Haldane

An inordinate fondness for beetles.

Another possible mode of making rapid evolutionary jumps is by hybridisation.

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Our ancestors were mostly rather rare creatures.

The Causes of Evolution (1932)

I have no doubt that in reality the future will be vastly more surprising than anything I can imagine.

Possible Worlds and Other Essays (1927)

The universe is not only queerer than we imagine, but queerer than we can imagine.

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