It seems to me that for Darwin the pulsing of evolutionary rates was a strictly vertical phenomenon.
Ernst Mayr

Mr. Darwin contributes some striking and ingenious instances of the way in which the principle partially affects the chain, or rather network of life, even to the total obliteration of certain meshes.
Richard Owen

Mr. Darwin refers to the multitude of the individual of every species, which, from one cause or another, perish either before, or soon after attaining maturity.
Richard Owen

My theory of evolution is that Darwin was adopted.
Steven Wright

No naturalist has devoted more painstaking attention to the structure of the barnacles than Mr. Darwin.
Richard Owen

The classics of Marxism, while fully appreciating the significance of the Darwinian theory, pointed out the errors of which Darwin was guilty. Darwin's theory, though unquestionably materialist in its main features, is not free from some serious errors.
Trofim Lysenko

The progress of evolution from President Washington to President Grant was alone evidence to upset Darwin.
Henry B. Adams

We entered the 20th century trying to deal with three ideas purporting to define or describe or explain three spheres of action, development and conflict: Darwin on the natural world, Freud on the internal world, Marx on the economic world.
Bruce Jackson