What innocence is and its nature, few in the world know, and those who are in evil know nothing at all about it. It is, indeed, visible to the eyes, as seen in the face, speech and movements, particularly of little children. Yet it is not known what innocence is, and still less that it is that in which heaven is stored up in man. In making this known I would proceed in order, and speak first of the innocence of childhood, then of the innocence of wisdom, and lastly of the state of heaven in regard to Innocence.