I have said more than once, that I hold space to be something purely relative, as time; an order of coexistences, as time is an order of successions.

We live in the best of all possible worlds

I hold that it is only when we can prove everything we assert that we understand perfectly the thing under consideration.

If you have a clear idea of a soul, you will have a clear idea of a form; for it is of the same genus, though a different species.

It is God who is the ultimate reason things, and the Knowledge of God is no less the beginning of science than his essence and will are the beginning of things.

Thus God alone is the primary Unity, or original simple substance, from which all monads, created and derived, are produced.

Make me the the master of education, and I will undertake to change the world.