I think I have fairly heard and fairly weighed the evidence on both sides, and I remain an utter disbeliever in almost all that you consider the most sacred truths... I can see much to admire in all religions... But whether there be a God and whatever be His nature; whether we have an immortal soul or not, or whatever may be our state after death, I can have no fear of having to suffer for the study of nature and the search for truth.
Alfred Russel WallaceEvery species has come into existence coincident both in space and time with a pre-existing closely allied species.
Alfred Russel WallaceThere is a tendency in nature to the continued progression of certain classes of varieties further and further from the original type.
Alfred Russel Wallace