The great intellectual tradition that comes down to us from the past was never interrupted or lost through such trifles as the sack of Rome, the triumph of Attila, or all the barbarian invasions of the Dark Ages. It was lost after the introduction of printing, the discovery of America, the founding of the Royal Society, and all the enlightenment of the Renaissance and the modern world. It was there, if anywhere, that there was lost or impatiently snapped the long thin delicate thread that had descended from distant antiquity; the thread of that unusual human hobby: the habit of thinking.

Nothing is certain by uncertainty.

There is a case for telling the truth; there is a case for avoiding the scandal; but there is no possible defense for the man who tells the scandal, but does not tell the truth

There is a law written in the darkest of the Books of Life, and it is this: If you look at a thing nine hundred and ninety-nine times, you are perfectly safe; if you look at it the thousandth time, you are in frightful danger of seeing it for the first time.

He can only get away from death by continually stepping within an inch of it.

A great man is not a man so strong that he feels less than other men; he is a man so strong that he feels more.

It is really not so repulsive to see the poor asking for money as to see the rich asking for more money. And advertisement is the rich asking for more money.