"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."

"Chance is the only source of true novelty."

"We were searching for a structure so simple and beautiful that it had to be true."

"The more we know about the brain, the more we realize how complex it is."

"The greatest joy in science is to understand something that no one else has understood before."