regard to what is expedient; and so those that rule in aristocracies do not allow orators to be pathetic in their pleadings. For reasoning without passion has a direct tendency to justice, while if passion is infused, a contest and difference is excited between pleasure and pain on the one hand, and judgement and justice on the other. For otherwise how is it that in philosophical speculations people are with little pain frequently induced by others to change their opinions, and even Aristotle himself and Democritus and Chrysippus have rejected without trouble or pain, and even with pleasure, some of the opinions which they formerly advocated? For no passion stands in the way in the theoretic and scientific part of the soul, and the unreasoning element is quiet and gives no trouble therein. And so reason gladly inclines to the truth, when it is evident, and abandons error; for in it, and not in passion, lies a willingness to listen to conviction and to change one's opinions on conviction. But the deliberations and judgements and arbitrations of most people as to matters of fact being mixed up with passion, give reason no easy or pleasant access, as she is held fast and incommoded by the unreasonable, which assails her through pleasure, or fear, or pain, or desire. And the decision in these cases lies with sense which has dealings with both passion and reason, for if one gets the better of the other the other is not destroyed, but only dragged along by force in spite of its resistance. For he who is dissatisfied with himself for falling in love calls in reason to his aid to overcome his passion, for both reason and passion are in his soul, and he perceives they are contrary one to the other, and violently represses the inflammatory one of the two. On the other hand, in deliberations and speculations without passion (such as the contemplative part of the soul is most conversant with), if they are evenly balanced no decision takes place, but the matter is left in doubt, which is a sort of stationary position of the mind in conflicting arguments. But should there be any inclination to one of the two sides, the most powerful opinion carries the day, yet without giving pain or creating hostility. And, generally speaking, when reason seems opposed to reason, there is no perception of two distinct things, but only of one under different phases, whereas when the unreasoning has a controversy with reason, since there can be no victory or defeat without pain, forthwith they tear the soul in two,[235] and make the difference between them apparent.