The greatest productive force is human selfishness.

The power to tax, once conceded, has no limits; it continues until it destroys.

I believe that almost all politicians are honest. For every bribed alderman there are hundreds of politicians, low paid or not paid at all, doing their level best without thanks or glory to make our system work. If this were not true, we would never have gotten past the thirteen colonies.

You can have peace. Or you can have freedom. Don't ever count on having both at once.

Nor would anybody suspect. If was one thing all people took for granted, was conviction that if you feed honest figures into a computer, honest figures come out. Never doubted it myself till I met a computer with a sense of humor.

Humans hardly ever learn from the experience of others. They learn - when they do, which isn't often - on their own, the hard way.

Faith is intellectual laziness.