Our sun enlightens the planets that belong to him; why may not every fixed star also have planets to which they give light?

I feel nothing, apart from a certain difficulty in continuing to exist.

It is the passions that do and undo everything.

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.

Nature is never so admired as when she is understood.

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

Mathematicians are like lovers. Grant a mathematician the least principle, and he will draw from it a consequence which you must also grant him, and from this consequence another.