Politeness is the art of selecting among one's real thoughts.

Adversityis the foundation of virtue.

Keep a secret; its you slave. Tell it, and it's your master.

Everybody thinks of changing humanity and nobody thinks of changing himself.

Peoplewho are too concerned with how well they are doing will be less successfuland feel less competent than those who focus on the task itself... Somepsychologists call it a conflict between egoorientation,or between extrinsic and intrinsic motivation…

If absolute power corrupts absolutely, does absolutepowerlessness make you pure?

Pessimism, when you get used to it, is just as agreeable as optimism.

If you ain'tnever pick up the sword, you ain't never have to worry about fallin' on it.

The major cause of traffic accidents is that men put into their cars as much ego as petrol.

I have oftenregretted my speech, never my silence.

You'rein a much better position to talk with people when they approach you thanwhen you approach them.

Another form of wastefulness is expenditure of words beyond the income of ideas.