God makes nothing without order, and everything that forms itself develops imperceptibly out of small parts.

It is unworthy of excellent men to lose hours like slaves in the labor of calculation which could be relegated to anyone else if machines were used.

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

Everything that is possible demands to exist.

There never is absolute birth nor complete death, in the strict sense, consisting in the separation of the soul from the body. What we call births are developments and growths, while what we call deaths are envelopments and diminutions.

There is a world of created beings - living things, animals, entelechies, and souls - in the least part of matter.... Thus there is nothing waste, nothing sterile, nothing dead in the universe; no chaos, no confusions, save in appearance.

Every present state of a simple substance is the natural consequence of its preceding state, in such a way that its present is big with its future.