[19] And the expression, "he was not found," [9] is very appropriately employed of him whose place was changed, either from the fact of his ancient blameable life being wiped out and effaced, and being no longer found, just as if it had never existed at all, or else because he whose place has been changed, and who is enrolled in a better class, is naturally difficult to be discovered. For wickedness is a very multiform and extensive thing, on which account it is known to many persons; but virtue is rare, so that it is not comprehended even by a few.