The height of stupidity is most clearly demonstrated by the individual who ridicules something he knows nothing about.

Man's will, sustained by an indominable conviction, is much more powerful than material forces that seem insurmountable.

A person starts to live when he can live outside himself.

I was sitting in a chair in the patent office at Bern when all of a sudden a thought occurred to me: "If a person falls freely he will not feel his own weight." I was startled. This simple thought made a deep impression on me. It impelled me toward a theory of gravitation.

You believe in a god that plays dice; I believe in law & order.

Often in evolutionary processes a species must adapt to new conditions in order to survive. Today the atomic bomb has altered profoundly the nature of the world as we know it, and the human race consequently finds itself in a new habitat to which it must adapt its thinking.

Even a fool is wise after an event.