Imaginary numbers are a fine and wonderful refuge of the divine spirit almost an amphibian between being and non-being.

The present is saturated with the past and pregnant with the future.

I do not conceive of any reality at all as without genuine unity.

All things in God are spontaneous.

For, above all, I hold a notion of possibility and necessity according to which there are some things that are possible, but yet not necessary, and which do not really exist. From this it follows that a reason that always forces a free mind to choose one thing over another (whether that reason derives from the perfection of a thing, as it does in God, or from our imperfection) does not eliminate our freedom.

The knowledge which we have acquired ought not to resemble a great shop without order, and without an inventory; we ought to know what we possess, and be able to make it serve us in need.

I also take it as granted that every created thing, and consequently the created monad also, is subject to change, and indeed that this change is continual in each one.