Chap. xxviii. Of the Composition and Harmony of the humane soul. As the Consonancy of the body consists of a due measure and proportion of the members: so the consonancy of the minde of a due temperament, and proportion of its vertues and operations which are concupiscible, irascible, and reason, which are so proportioned together. For Reason to Concupiscence hath the proportion Diapason; but to Anger Diatessaron: and Irascible to Concupiscible hath the proportion Diapente. When therefore the best proportionated soul is joyned to the best proportionated body, it is manifest that such a man also hath received a most happy lot in the distribution of gifts, for as much as the soul agrees with the body in the disposition of Naturals, which agreement indeed is most hid, yet after some maner shadowed to us by the wise. But to hasten to the Harmony of the soul, we must inquire into it by those Mediums by which it passeth to us, (i.e.) by Celestial Bodies, and Sphears; Knowing therefore what are the powers of the soul to which the Planets answer, we shal by those things which have been spoken of before, the more easily know their agreements amongst themselves. For the Moone governs the powers of increasing and decreasing; the Phantasie and Wits depends on Mercury; the Concupiscible vertue on Venus; the Vitall on the Sun; the Irascible on Mars; the Natural on Jupiter: the Receptive on Saturn: but the Will as the Primum Mobile, and the guide of all these Powers at pleasure, being joyned with the superior intellect, is always tending to good; which intellect indeed doth alwayes shew a pathway to the Will, as a Candle to the eye; but it moves not it self, but is the Mistriss of her own operation, whence it is called Free Will; and although it alwayes tends to good, as an object sutable to it self: yet sometimes being blinded with error, the animal power forcing it, it chooseth evil,