"Once you start thinking about things, you worry as to if you thought enough. Did you really take all the details into consideration? Was every fact properly reviewed? And by jove, the more you think about it, the more you realize you really couldn't take everything into consideration, because all the variables in every decision are incalculable, so you get anxiety. And this, though, also, is the price you pay for knowing that you know. For being able to think about thinking, being able to feel about feeling. And so you're in this funny position."

- Alan Watts.