“We are all a complete mixture;yet at the same time,we are all related.Each gene can trace its own journey to a different common ancestor.This is a quite extraordinary legacy that we all have inheri...”

“DNA is the messenger which illuminates that connection,handed down from generation to generation,carried,literally,in the bodies of my ancestors.”

“I do not know what I may appear to the world, but to myself I seem to have been only like a boy playing on the sea-shore, and diverting myself in now and then finding a smoother pebble or a prettie...”

“To know the history of science is to recognize the mortality of any claim to universal truth. ”

“The scientist only imposes two things, namely truth and sincerity, imposes them upon himself and upon other scientists.”