A man with one watch might have the wrong time; a man with two watches is more aware of his own ignorance.
The only problem with this quote is that if I have two watches and they have the same time on them, maybe I synchronized them at some point, then that would seem to make me more confident about what time it actually was, given that if I have a single watch, the battery could be dying and the watch tick a little slower. Or maybe I'm thinking too much.
A monthly thread for posting rationality-related quotes you've seen recently (or had stored in your quotesfile for ages).
ETA: It would seem that rationality quotes are no longer desired. After several days this thread stands voted into the negatives. Wolud whoever chose to to downvote this below 0 would care to express their disapproval of the regular quotes tradition more explicitly? Or perhaps they may like to browse around for some alternative posts that they could downvote instead of this one? Or, since we're in the business of quotation, they could "come on if they think they're hard enough!"