Since the princes take the Earth for their own, it's fair that the philosophers reserve the sky for themselves and rule there, but they should never permit the entry of others.

If I held all the thoughts of the world in my hand, I would be careful not to open it.

A philospher sees the Earth as a large planet, travelling through the heavens, covered with fools

They will have the World to be in Large, what a Watch is in Small; which is very regular, and depends only upon the just disposing of the several Parts of the Movement.

I hate war, for it spoils conversation.

People almost always do great things without knowing how to do them, and are quite surprised to have done them.

Behold a universe so immense that I am lost in it. I no longer know where I am. I am just nothing at all. Our world is terrifying in its insignificance.