"Chance is the only source of true novelty."

"No newborn child has a soul."

"If you want to be a scientist, you have to be prepared to be wrong a lot."

"It is not the strongest of the species that survives, nor the most intelligent that survives. It is the one that is most adaptable to change."

"The origin of life appears to be almost a miracle, so many are the conditions which would have had to be satisfied to get it going."