What I'm really interested in is whether God could have made the world in a different way; that is, whether the necessity of logical simplicity leaves any freedom at all.

Freedom of teaching and of opinion in book or press is the foundation for the sound and natural development of any people.

There two things that are infinite, human stupidity and the universe, I don't know about the universe

The music of Mozart is of such purity and beauty that one feels he merely found it - that it has always existed as part of the inner beauty of the universe waiting to be revealed.

In the middle of difficulties lie opportunities.

If you want different results, do not do the same things.

I was supposed to choose apractical profession, but this was simply unbearable to me.