[41] [cap.13] In this manner, then, it is useful to oppose those who are ostentatious about doctrines. For if we have been well exercised in various species of discourses, we shall no longer stumble through inexperience and want of acquaintance with the manoeuvres of sophists. But rising up and making a firm and resolute stand against them, we shall with ease escape from their artificial entanglements. But they, when their tricks have once been found out, will appear to be exhibiting the conduct of sparrers rather than of regular combatants. For they too, in their own opinion, get great credit by their style of beating the air; but when they come to a real contest they meet with no moderate disgrace.