A program that produces incorrect results twice as fast is infinitely slower.
When working on a problem, think only how to solve it. If the solution is not simple and has no inner beauty such as art, it is wrong.
The key to performance is elegance, not battalions of special cases.
Simplicity is prerequisite for reliability.
Any intelligent fool can make things bigger, more complex, and more violent. It takes a touch of genius -- and a lot of courage -- to move in the opposite direction.