It has long seemed ridiculous to me to suppose that the nature of things has been so poor and stingy that it provided souls only to such a trifling mass of bodies on our globe, like human bodies, when it could have given them to all, without interfering with its other ends.

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

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.

Music is nothing but unconscious arithmetic.

He who understands Archimedes and Apollonius will admire less the achievements of the foremost men of later times.

..This is why the ultimate reason of things must lie in a necessary substance, in which the differentiation of the changes only exists eminently as in their source; and this is what we call God.

Reality cannot be found except in One single source, because of the interconnection of all things with one another.