A quote by famous investor Warren Buffett. It refers to the cyclical downturns of economy, but remains true for any situation subject to fluctuations.

It's only when the tide goes out that you get to see who's been swimming with their trunks off.

This one is just too tempting. From the Dilbert comic for September 3rd 2008.

If everyone is doing it, best practices are equivalent to mediocrity.

From a great movie I watched yesterday, Seven Samurai (Shichinin no samurai, 1954), from Akira Kurosawa.

A man should not care about his beard when his head is about to be taken.