On the Unchangeableness of God (126-130)

when this conviction rises up, it makes a catalogue of all the offences of the soul, and reproaching it with them, and looking sternly at it, it is scarcely able to be stopped in its attacks upon it; and the soul being convicted recognises all its actions by which it has offended against right reason, [*] [*]

On which account Moses also establishes a most extraordinary law, in which he enjoins that "the man who is in part leprous shall be accounted impure, but that he who is wholly, from the sole of his foot to the crown of his head overwhelmed with leprosy, shall be considered pure;" [*] for any one else, I apprehend, reasoning from probability, would say the exact contrary, and would think that the leprosy which was contracted, and which extended over only a small portion of the body, was less impure, but that the leprosy which was diffused, so as to spread over the whole body was more impure:

but Moses here, as it appears to me, uses this symbolical expression to intimate this most undeniable truth, that unintentional misdeeds, even if they be of the greatest enormity, are not deserving of blame, and are pure, inasmuch as they have not conscience, that terrible accuser, to testify against them: but that intentional offences, even if they do not extend over a wide surface, being convicted by the judge who passes sentence against the soul, are rightly accounted unholy, and polluted, and impure.

This leprosy, therefore, being of a twofold character, and putting forth two complexions, signifies voluntary depravity; for the soul, though it has healthy, and vivifying, and right reason in itself, does not use it for the preservation of its good things, but surrendering itself to persons unskilled in navigation, it overturns the whole bark of life, which might have been saved in calm fine weather;

but when it changes so as to assume one uniform white appearance, it displays an involuntary change; since the mind, entirely deprived of the power of reasoning, not having left in it one single seed to beget understanding, like a man in a mist or in deep darkness, sees nothing that ought to be done; but, like a blind man, falling without seeing his way before him into all kinds of error, endures continual falls and disasters one after another, in spite of all its efforts.