"Just as pre-Darwinian biology was carried out by people whose faith was in the Creator and His plan, post-Darwinian biology is being carried out by people whose faith is in, almost, the deity of Darwin. They've seen their task as to elaborate his theory and to fill the gaps in it, to fill the trunk and twigs of the tree. But it seems to me that theoretical framework has very little impace on the actual progress of the work in biological research. In a way some aspects of Darwinism seems to me to have held back the progress of science."