A Monad (n.) is a self-unfolding perception requiring no shared space or shared time. Through it, a world is perceived and unfolded without the assumption or presupposition of perception in general.
The Monad (n.) is a formal perception that unfolds the world from itself.
A Monad (n.) is a sort of mental substance or soul, characterized by its perceptions (in the widest sense of 'perception').
A Monad (n.) is nothing but a simple substance that enters into composites simple, that is, indivisible, without parts, without extension, and without shape.
The Monad (n.) is of various kinds. The soul of a person, for example, is a monad.
The Monad (n.) is not formed by composition. Insofar as this is the case, it cannot be said to come into existence by natural means, but must come into existence or annihilation all at once.
The Monad (n.) is that every idea is a totality each monad contains all monads.
The Monad (n.) is the true atom of nature and, in brief, the element of things.