Icarian wings of presumption, they prematurely snatch the master's cap; and mere boys become unworthy professors of the several faculties, through which they do not make their way step by step, but like goats ascend by leaps and bounds; and, having slightly tasted of the mighty stream, they think that they have drunk it dry, though their throats are hardly moistened. And because they are not grounded in the first rudiments at the fitting time, they build a tottering edifice on an unstable foundation, and now that they have grown up, they are ashamed to learn what they ought to have learned while young, and thus they are compelled to suffer for ever for too hastily jumping at dignities they have not deserved. For these and the like reasons the tyros in the schools do not attain to the solid learning of the ancients in a few short hours of study, although they may enjoy distinctions, may be accorded titles, be authorized by official robes, and solemnly installed in the chairs of the elders. Just snatched from the cradle and hastily weaned, they mouth the rules of Priscian and Donatus; while still beardless boys they gabble with childish stammering the Categories and Peri Hermeneias, in the writing of which the great Aristotle is said to have dipped his pen in his heart's blood. Passing