The monad, of which we shall speak here, is nothing but a simple substance which enters into compounds; simple, that is to say, without parts.

For things remain possible, even if God does not choose them. Indeed, even if God does not will something to exist, it is possible for it to exist, since, by its nature, it could exist if God were to will it to exist.

There is nothing waste, nothing sterile, nothing dead in the universe; no chaos, no confusions, save in appearance.

Philosophy consists mostly of kicking up a lot of dust and then complaining that you can't see anything.

There are also two kinds of truths: truth of reasoning and truths of fact.

I am convinced that the unwritten knowledge scattered among men of different callings surpasses in quantity and in importance anything we find in books, and that the greater part of our wealth has yet to be recorded.

Nothing is necessitated whose opposite is possible.