[75] for which reason, though I admire him on account of the good fortune with which he was endowed by nature, I nevertheless blame the disposition in him that, when he was challenged to a contest of discussion, he came forward to contend, when he ought to have abided by his usual tranquillity, discarding all love for contention. But if he was determined by all means to enter into such a contest, then still he ought not to have engaged in it until he had sufficiently practised himself in the exercises of the art; for men who have been long versed in political strife are usually accustomed to get the better of men of uncultivated acuteness.