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Voluntary birth control methods only work on the people who choose to use ’em. A population check that doesn’t work on everybody doesn’t work at all, because it simply breeds out the ones who use it. The only population check that really works is one that affects everybody, like a limit of space or food.

— Damon Knight A for Anything (1959)

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More quotes by Damon Knight

No progress, either moral or material, can be made in a world which is frozen, like ours, into a rigid mold of suppression of liberties.

A for Anything (1959)

When two alien cultures meet, the stronger must transform the weaker with love or hate.

A society that put more emphasis on birth than ability was likely to breed ability out of its ruling class.

A for Anything (1959)

“Don’t lose your temper,” said Ruell evenly. “It’s your worst fault, except for ignorance.”

A for Anything (1959)

Science fiction … means what we point to when we say it.

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