Laurence J. Peter
Bureaucracy defends the status quo long past the time when the quo has lost its status.
The best intelligence test is what we do with our leisure.
Speak when you are angry — and you'll make the best speech you'll ever regret.
If two wrongs don't make a right, try three.
You can always tell a real friend: when you've made a fool of yourself he doesn't feel you've done a permanent job.