The world as we see it is only the world as we see it. Others may see it differently.

All these constructions and the laws connecting them can be arrived at by the principle of looking for the mathematically simplest concepts and the link between them.

I don't teach my students, I provide the circumstances in which they can learn.

It is also a natural thing for a serious young man that he should form for himself as precise an idea as possible of the goal of his desires.

Beyond the realms of what we see, into the regions or the unexplored limited only by our imaginations.

The world will not be destroyed by those who do evil, but by those who watch them without doing anything.

If I had known they were going to do this, I would have become a shoemaker.