In each of us there is a little of all of us.

It is hardly to be believed how spiritual reflections when mixed with a little physics can hold people's attention and give them a livelier idea of God than do the often ill-applied examples of his wrath.

Man is a masterpiece of creation, if only because no amount of determinism can prevent him from believing that he acts as a free being.

Reason now gazes above the realm of the dark but warm feelings as the Alpine peaks do above the clouds. They behold the sun more clearly and distinctly, but they are cold and unfruitful.

One has to do something new in order to see something new.

What you have been obliged to discover by yourself leaves a path in your mind which you can use again when the need arises.

I believe that man is in the last resort so free a being that his right to be what he believes himself to be cannot be contested.