[245] Now those who are irreconcilable and implacable enemies are set down thus; the follies and intemperances of the soul, cowardice and injustice, and all the other irrational appetites which are accustomed to be generated by luxuriant and impotent appetite, raising their heads high and becoming restiff, and preventing the mind from proceeding in its straight course; and very often throwing its whole system into confusion and beating it down.