Science gives us knowledge, but only philosophy can give us wisdom.

Cultivate your garden. Do not depend upon teachers to educate you... follow your own bent, pursue your curiosity bravely, express yourself, make your own harmony.

History reports that the men who can manage men manage the men who can manage only things, and the men who can manage money manage all.

In philosophy, as in politics, the longest distance between two points is a straight line.

From barbarism to civilization requires a century; from civilization to barbarism needs but a day.

We Americans are the best informed people on earth as to the events of the last twenty-four hours; we are the not the best informed as the events of the last sixty centuries.

A great civilization is not conquered from without, until it has destroyed itself from within. The essential causes of Rome's decline lay in her people, her morals, her class struggle, her failing trade, her bureaucratic despotism, her stifling taxes, her consuming wars.