Leibniz: Every soul is a world apart I guess "every soul is a world apart", if you will, because self-awareness is sort of private?
I don't experience your self-awareness, you don't experience mine, we can't (unless we become the other) - we're apart (in that respect).
Self-awareness is essentially indexical, a kind of self-knowledge, and bound by ontological self-identity, like a kind of noumena.
Perhaps, by Leibniz, self-awareness is (implicitly or explicitly) integral to "soul", and thus inherently private (in part)? — jorndoe Well said. curious