“ Natural selection is not the wind which propels the vessel, but the rudder which, by friction, now on this side and now on that, shapes the course. Asa Gray
“ To suppose that the eye with all its inimitable contrivances for adjusting the focus to different distances, for admitting different amounts of light, and for the correction of spherical and chromatic… Charles Darwin
“ The human has genetic adaptation to natural electromagnetic radiation. Increasing, reducing or removing the natural radiation exposures results in a sickened human that may progress onto a diseased st… Steven Magee
“ More about the selection theory: Jerne meant that the Socratic idea of learning was a fitting analogy for 'the logical basis of the selective theories of antibody formation': Can the truth (the capabi… Niels Kaj Jerne
“ I fully agree with all that you say on the advantages of H. Spencer's excellent expression of 'the survival of the fittest.' This, however, had not occurred to me till reading your letter. It is, howe… Charles Darwin
“ The facts of variability, of the struggle for existence, of adaptation to conditions, were notorious enough; but none of us had suspected that the road to the heart of the species problem lay through… Thomas Henry Huxley
“ In microbiology the roles of mutation and selection in evolution are coming to be better understood through the use of bacterial cultures of mutant strains. Edward Tatum
“ There was something built into the human brain by natural selection which was once useful, and which now manifests itself as religion. Richard Dawkins
“ I could show fight on natural selection having done and doing more for the progress of civilization than you seem inclined to admit. Remember what risk the nations of Europe ran, not so many centuries… Charles Darwin
“ If theft is advantageous to everyone who succeeds at it, and adultery is a good strategy, at least for males, for increasing presence in the gene pool, why do we feel they are wrong? Shouldn't the onl… Robert J. Sawyer
