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

"It is a cursed evil to any man to become so absorbed in any one subject as I am in mine."

"Man is descended from a hairy, tailed quadruped, probably arboreal in its habits, and an inhabitant of the Old World."

"I have tried lately to read Shakespeare, and found it so intolerably dull that it nauseated me."

"An American monkey, after getting drunk on brandy, would never touch it again, and thus is much wiser than most men."