Ronald Fisher Natural Quotations

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

In scientific subjects, the natural remedy for dogmatism has been found in research.

We may consequently state the fundamental theorem of Natural Selection in the form: The rate of increase in fitness of any organism at any time is equal to its genetic variance in fitness at that time.

Natural selection is not evolution.

No isolated experiment, however significant in itself, can suffice for the experimental demonstration of any natural phenomenon; for the "one chance in a million" will undoubtedly occur, with no less and no more than its appropriate frequency, however surprised we may be that it should occur to us.