Question: Riddles and Proverbs

Oh man did my headache not go away, despite the air of refreshment that usually wafts over me when I let you little bastards go early.

Identify a proverb (i.e. a piece of conventional wisdom) that you either follow or are at least influenced by.

Trust me: this is a crappily phrased question, but the answers should more than make up for it.

The books are in ... hurray?