And then there's this

[pjthompson]

I pretty much take these as articles of faith, having encountered these principles before they became a class at Harvard. I've proved to myself the validity of these attitudes over and over, but I have to remind myself over and over. This is a simple mantra, not a simplistic one: although it may look that way from the outside, these things are often difficult to maintain with an consistency, especially if there are "body chemical issues" involved.

http://www.npr.org/templates/story/story.php?storyId=5295168