"Those who have produced stoic philosophies have all had enough to eat and drink."

"Science may set limits to knowledge, but it ought not to set limits to imagination."

"The opinion that snow is white must be held to show a morbid taste for eccentricity…"

"The most savage controversies are those about matters as to which there is no good evidence either way."

"I would rather be a man of paradoxes than a man of prejudices."