Charles Darwin — "A dog might as well speculate on the mind of Newton."

"We are like a judge who has to sum up and deliver judgment, not on the evidence of witnesses, but on the arguments of counsel."

"Ignorance more frequently begets confidence than does knowledge: it is those who know little, and not those who know much, who so positively assert that this or that problem will never be solved by sc…"

"I confess I am not much interested in the future, for I am too much occupied with the present."

"What a book a Devil's Chaplain might write on the clumsy, wasteful, blundering, low, and horridly cruel works of nature!"

"At some future period, not very distant as measured by centuries, the civilized races of man will almost certainly exterminate and replace the savage races throughout the world."