Hofstadter's Law: It always takes longer than you expect, even when you take into account Hofstadter's law.
Simplicity is prerequisite for reliability.
The key to performance is elegance, not battalions of special cases.
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.
Deleted code is debugged code.