It would seem that men always need some idiotic fiction in the name of which they can hate one another. Once it was religion. Now it is the State.

Information is not knowledge.

I know that philosophically a murderer is not responsible for his crime, but I prefer not to take tea with him.

I recently discussed with an intelligent and well-disposed man the threat of another war, which in my opinion would seriously endanger the existence of mankind, and I remarked that only a supranational organization would offer protection from that danger. Thereupon my visitor, very calmly and coolly, said to me: "Why are you so deeply opposed to the disappearance of the human race?".

Men marry women with the hope they will never change. Women marry men with the hope they will change. Invariably they are both disappointed.

By academic freedom I understand the right to search for truth and to publish and teach what one holds to be true. This right implies also a duty: one must not conceal any part of what on has recognized to be true. It is evident that any restriction on academic freedom acts in such a way as to hamper the dissemination of knowledge among the people and thereby impedes national judgment and action.

One can't teach a cat not to catch birds