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The change from one stable equilibrium to the other may take place as the result of the isolation of a small unrepresentative group of the population, a temporary change in the environment which alters the relative viability of different types, or in several other ways...

— J. B. S. Haldane The Causes of Evolution (1932)

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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.

The Causes of Evolution (1932)

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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