All truth is not, indeed, of equal importance; but if little violations are allowed, every violation will in time be thought little.
-- Samuel Johnson
Anyone who doesn't take truth seriously in small matters cannot be trusted in large ones either.
-- Albert Einstein
(Last month's started a little late, I thought I'd bring it back to its original schedule.)
A monthly thread for posting any interesting rationality-related quotes you've seen recently on the Internet, or had stored in your quotesfile for ages.