The Wall Street Journal has a nice collection of the best Steve Jobs quotes (celebrating his resignation). One of my favorites:
When you’re a carpenter making a beautiful chest of drawers, you’re not going to use a piece of plywood on the back, even though it faces the wall and nobody will ever see it. You’ll know it’s there, so you’re going to use a beautiful piece of wood on the back. For you to sleep well at night, the aesthetic, the quality, has to be carried all the way through.
Hey Steve: Relax, you’ve done more than enough for this world.