Thursday, February 12, 2009
In Charles Darwin's own words:
Let it also be borne in mind how infinitely complex and close-fitting are the mutual relations of all organic beings to each other and to their physical conditions of life; and consequently what infinitely varied diversities of structure might be of use to each being under changing conditions of life ... If such [variations] do occur, can we doubt (remembering that many more individuals are born than can possibly survive) that individuals haing any advantage, however slight, over others, would have the best chance of surviving and of procreating their kind? ... This preservation of favourable individual differences and variations, and the destruction of those which are injurious, I have called Natural Selection, or the Survival of the Fittest.