Knowledge is limited.

All my life I have dealt with objective matters; hence I lack both the natural aptitude and the experience to deal properly with people and to carry out official functions.

We shall require a substantially new manner of thinking if mankind is to survive.

It is impossible to get out of a problem by using the same kind of thinking that it took to get into it.

The real difficulty, the difficulty which has baffled the sages of all times, is rather this: how can we make our teaching so potent in the motional life of man, that its influence should withstand the pressure of the elemental psychic forces in the individual?

The Devil craps on the big pile

Compound interest on debt was the banker's greatest invention, to capture, and enslave, a productive society.