All evolutionary biologists know that variation itself is…

If biologists so often forget the most universal of all biologic principles [variation], it is not surprising that men and women in general expect…

— Alfred Kinsey

Paleontologist Niles Eldredge, a prominent evolutionist, said: 'The doubt that has infiltrated the previous, smugly confident certitude of evolutionary biology’s last twenty years has…

— Niles Eldredge

Darwin's principle of natural selection leads to the prediction that the proper way to analyze any evolutionary development is to see the new features…

— Stephen Jay Gould

... many folks take them seriously because they just 'know' that evolution can never be seen in the immediate here and now. In fact,…

— Stephen Jay Gould

It is so hard for an evolutionary biologist to write about extinction caused by human stupidity. Let me then float an unconventional plea, the…

— Stephen Jay Gould

[E]volutionists sometimes take as haughty an attitude toward the next level up the conventional ladder of disciplines: the human sciences. They decry the supposed…

— Stephen Jay Gould

A complete theory of evolution must acknowledge a balance between "external" forces of environment imposing selection for local adaptation and "internal" forces representing constraints…

— Stephen Jay Gould

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

The essence of Darwinism lies in its claim that natural selection creates the fit. Variation is ubiquitous and random in direction. It supplies raw…

— Stephen Jay Gould

Natural selection is just three factors - over-production, variation, and inheritance combined to produce adaptation to changing local environments. It's not a principle or…

— Stephen Jay Gould

Throughout his last half-dozen books, for example, Arthur Koestler has been conducting a campaign against his own misunderstanding of Darwinism. He hopes to find…

— Stephen Jay Gould

By profession a biologist, [Thomas Henry Huxley] covered in fact the whole field of the exact sciences, and then bulged through its four fences.…

— H. L. Mencken

The shelves of many evangelicals are full of books that point out the flaws in evolution, discuss it only as a theory, and almost…

— Francis Collins

Biochemists and biologists who adhere blindly to the Darwinism theory search for results that will be in agreement with their theories and consequently orient…

— Pierre-Paul Grasse

Le biologiste passe, la grenouille reste. The biologist passes, the frog remains.

— Jean Rostand