APPERCEPTION • E-FREE TRANSLATION.COM • Definition of Apperception

... known through an immediate sensation, and that the rest is known to us only through relations with these ideas. But when he admits that we have no idea of God, of spirit, of substance, he does not appear to have observed sufficiently that we have immediate apperception of substance and of spirit in our apperception of ourselves, and that the idea of God is found in[409] the idea of ourselves through a suppression of the limits of our perfections, as extension taken in an absolute sense ...

— Theodicy - Essays on the Goodness of God, the Freedom of Man and the Origin of Evil • G. W. Leibniz