"Ignorance more frequently begets confidence than does knowledge."

"If it could be demonstrated that any complex organ existed, which could not possibly have been formed by numerous, successive, slight modifications, my theory would absolutely break down."

"I have always maintained that, in this country, a man can do whatever he likes, provided he is a gentleman."

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

"The expression of the emotions in man and animals is a study of the utmost interest."