4.16.24   But I saw not yet, whereon this weighty matter turned in Thy wisdom, O Thou Omnipotent, who only doest wonders; and my mind ranged through corporeal forms; and "fair," I defined and distinguished what is so in itself, and "fit," whose beauty is in correspondence to some other thing: and this I supported by corporeal examples. And I turned to the nature of the mind, but the false notion which I had of spiritual things, let me not see the truth. Yet the force of truth did of itself flash into mine eyes, and I turned away my panting soul from incorporeal substance to lineaments, and colours, and bulky magnitudes. And not being able to see these in the mind, I thought I could not see my mind. And whereas in virtue I loved peace, and in viciousness I abhorred discord; in the first I observed a unity, but in the other, a sort of division. And in that unity I conceived the rational soul, and the nature of truth and of the chief good to consist; but in this division I miserably imagined there to be some unknown substance of irrational life, and the nature of the chief evil, which should not only be a substance, but real life also, and yet not derived from Thee, O my God, of whom are all things. And yet that first I called a Monad, as it had been a soul without sex; but the latter a Duad; -anger, in deeds of violence, and in flagitiousness, lust; not knowing whereof I spake. For I had not known or learned that neither was evil a substance, nor our soul that chief and unchangeable good.