Biology Quote by Ronald Fisher

“It will be noticed that the fundamental theorem proved above bears some remarkable resemblances to the second law of thermodynamics. Both are properties of…

— Ronald A. Fisher

The basic formulation, or bare-bones mechanics, of natural selection is a disarmingly simple argument, based on three undeniable facts (overproduction of offspring, variation, and…

— Stephen Jay Gould

“EVOLUTION RESTS ON three steps: (a) certain biological traits are inherited by genetic means; (b) mutations and gene recombination produce variation in those traits;…

— Robert M. Sapolsky

“If artificial selection can make such major changes in so short a period of time, what must natural selection, working over billions of years,…

— Carl Sagan

“Darwinists are right to say that selection favours the organisms that leave alive the most progeny, but vigorous growth takes place within a constrained…

— James Lovelock

“Natural selection is a blind and undirected consequence of the interaction between variation and the environment. Natural selection exists only in the continuous present…

— Henry Gee

You put three facts together - that all organisms produce more offspring that can survive, that there's variation among organisms, and that at least…

— Stephen Jay Gould

Evolution by natural selection is not an idle hypothesis. The genetic variation on which selection acts is well understood in principle all the way…

— E. O. Wilson

Natural selection is a theory of local adaptation to changing environments. It proposes no perfecting principles, no guarantee of general improvement

— Stephen Jay Gould

“All living species “adapt.” Indeed, “adaptation” is a distinctive emergent property of life in general. Adaptation means that, over time, the average features of…

— Steven J. Dick

“Pity thwarts the whole law of evolution, which is the law of natural selection. It preserves whatever is ripe for destruction;”

— Friedrich Nietzsche

Natural selection acts solely by accumulating slight successive favorable variations, it can produce no great or sudden modification; it can act only by very…

— Charles Darwin