There is no difference between someone who eats too little and sees Heaven and someone who drinks too much and sees snakes.

If you had the power to destroy the world, would you do so?

The fundamental principle in the analysis of propositions containing descriptions is this: Every proposition which we can understand must be composed wholly of constituents with which we are acquainted.

The megalomaniac differs from the narcissist by the fact that he wishes to be powerful rather than charming, and seeks to be feared rather than loved. To this type belong many lunatics and most of the great men of history.

You are a wicked motorcar, and I shall not give you any more petrol until you go.

Never let yourself be diverted, either by what you wish to believe, or what you think could have beneficent social effects if it were believed; but look only and solely at what are the facts.

The power of thought, the vast regions it can master.