I don't trust a man who talks about ethics when he is picking my pocket. But if he is acting in his own self-interest and says so, I have usually been able to work out some way to do business with him.

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

If it can't be expressed in figures, it is not science; it is opinion. It has long been known that one horse can run faster than another - but which one? Diffe…

History has the relation to truth that theology has to religion - i.e., none to speak of.

The liar's punishment is, not in the least that he is not believed, but that he cannot believe any one else.

But man has almost constant occasion for the help of his brethren, and it is in vain for him to expect it from their benevolence only. He will be more likely t…

It's a perfect set of circumstances to give us the time Yeats foretold, with the best having lost all conviction and the worst full of passionate intensity. I'…