But there seems to be another vital principle that is irrational, and yet in some way partakes of reason. In the case of the continent and of the incontinent man alike we praise the reason or the rational part, for it exhorts them rightly and urges them to do what is best; but there is plainly present in them another principle besides the rational one, which fights and struggles against the reason. For just as a paralyzed limb, when you will to move it to the right, moves on the contrary to the left, so is it with the soul; the incontinent man’s impulses run counter to his reason. Only whereas we see the refractory member in the case of the body, we do not see it in the case of the soul. But we must nevertheless, I think, hold that in the soul too there is something beside the reason, which opposes and runs counter to it (though in what sense it is distinct from the reason does not matter here).

It seems, however, to partake of reason also, as we said: at least, in the continent man it submits to the reason; while in the temperate and courageous man we may say it is still more obedient; for in him it is altogether in harmony with the reason.