Efficiency is doing things right; effectiveness is doing the right things.
No man really knows about other human beings. The best he can do is to suppose that they are like himself.
When you’re good at something, make that everything.
If you want something said, ask a man; if you want something done, ask a woman.
The computing scientist's main challenge is not to get confused by the complexities of his own making.
The key to successful investing is to have a long-term perspective.