Natural selection is a mechanism for generating an exceedingly high degree of improbability.

- Ronald Fisher

Faith does not mean credulity...

- Ronald Fisher

The best time to plan an experiment is after you've done it.

- Ronald Fisher

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

- Ronald Fisher

Natural Selection is not Evolution. Yet, ever since the two words have been in common use, the theory of Natural Selection has been employed as a con…

- Ronald Fisher

After all, it is a common weakness of young authors to put too much into their papers.

- Ronald Fisher

[Coining phrase "null hypothesis"] In relation to any experiment we may speak of this hypothesis as the "null hypothesis," and it should be noted tha…

- Ronald Fisher

Experimental observations are only experience carefully planned in advance, and designed to form a secure basis of new knowledge.

- Ronald Fisher

We have the duty of formulating, of summarizing, and of communicating our conclusions, in intelligible form, in recognition of the right of other fre…

- Ronald Fisher