The key to performance is elegance, not battalions of special cases.

Deleted code is debugged code.

Hofstadter's Law: It always takes longer than you expect, even when you take into account Hofstadter's law.

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.

Incorrect documentation is often worse than no documentation.