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

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.

Every mind has a horizon in respect to its present intellectual capacity but not in respect to its future intellectual capacity.

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

Nihil est sine ratione. There is nothing without a reason.

But in simple substances the influence of one monad over another is ideal only.

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