Creativity is like washing a pig. It's messy. It has no rules. No clear beginning, middle or end. It's kind of a pain in the ass, and when you're done, you're not sure if the pig is really clean or even why you were washing a pig in the first place. — Luke Sullivan
If you're in advertising (or want to be) and you haven't yet read Luke Sullivan's Hey Whipple, Squeeze This!, you absolutely should.