Now the story of the birth of Darwinism is itself a proof of the fallacy of the Great Man theory, and a signal confirmation of the view that new ideas, theories and discoveries emanate from the material conditions. The role of the great man is still an important one. We need the men who are capable of abstract thought, capable of perceiving the essential relations and significance of the facts, and of drawing correct inductions from them. Such men are rare, but there are always enough of them to perform these functions. And the Great Man, born out of due time, before the material and economic conditions are ripe for him, can effect nothing. When the conditions are ripe, the new idea always occurs to more than one man; that is, the same conditions and facts force the same idea upon different minds. It is true there is always some one man who gives this idea its best expression or best marshals the evidence of the facts in its support, and the idea usually becomes inseparably linked with his name. In this way does our race express its gratitude to its great men and perpetuate their memory. Darwinism or the theory of Natural Selection was in this way independently discovered by Alfred Russell Wallace and Charles Darwin, and the popular judgment has not erred in giving the chief credit to Charles Darwin. Wallace's paper "On the Law which has Regulated the Introduction of New Species," written by Wallace on one of the far-away islands of the Malay Archipelago, where he was studying the Geographical Distribution of Species, appeared in the "Annals of Natural History" in 1855. Its resultant conclusion was "that every species has come into existence coincident both in space and time with a preexisting closely allied species." Mr. Darwin tells us that Mr. Wallace wrote him that the cause to which he attributed this coincidence was no other than "generation with modification," or in other words that the "closely allied ante-type" was the parent stock from which the new form had been derived by variation.