Best of Rationality Quotes

It is the mark of an educated mind to be able to entertain a thought without accepting it.

Aristotle

Most things are, in fact, slippery slopes. And if you start backing off from one thing because it's a slippery slope, who knows where you'll stop?

Sean M Burke

Truth emerges much more readily from error than from confusion.

Francis Bacon

He who refuses to do arithmetic is doomed to talk nonsense.

John McCarthy

Simplicity does not precede complexity, but follows it.

Alan Perlis (concerning computer programs, but I think the same is commonly true elsewhere)