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No practical biologist interested in sexual reproduction would be led to work out the detailed consequences experienced by organisms having three or more sexes; yet what else should he do if he wishes to understand why the sexes are, in fact, always two?

— Ronald Fisher The Genetical Theory of Natural Selection (1930)

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More quotes by Ronald Fisher

No efforts of mine could avail to make the book easy reading.

The Genetical Theory of Natural Selection (1930)

To consult the statistician after an experiment is finished is often merely to ask him to conduct a post mortem examination. He can perhaps say what the experiment died of.

The analysis of variance is not a mathematical theorem, but rather a convenient method of arranging the arithmetic.

Fairly large print is a real antidote to stiff reading.

Available scientific knowledge provides a firm basis for believing that the groups of mankind differ in their innate capacity for intellectual and emotional development.

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