Even the manhood of genius may pass unobserved by his companions, and, like. AEneas, he may be hidden in a cloud amidst his associates. The celebrated FABIUS MAXIMUS in his boyhood was called in derision "the little sheep," from the meekness and gravity of his disposition. His sedateness and taciturnity, his indifference to juvenile amusements, his slowness and difficulty in learning, and his ready submission to his equals, induced them to consider him as one irrecoverably stupid. The greatness of mind, unalterable courage, and invincible character, which Fabius afterwards displayed, they then imagined had lain concealed under the apparent contrary qualities. The boy of genius may indeed seem slow and dull even to the phlegmatic; for thoughtful and observing dispositions conceal themselves in timorous silent characters, who have not yet experienced their strength; and that assiduous love, which cannot tear itself away from the secret instruction it is perpetually imbibing, cannot be easily distinguished from the pertinacity of the mere plodder. We often hear, from the early companions of a man of genius, that at school he appeared heavy and unpromising. Rousseau imagined that the childhood of some men is accompanied by this seeming and deceitful dulness, which is the sign of a profound genius; and Roger Ascham has placed among "the best natures for learning, the sad-natured and hard-witted child;" that is, the thoughtful, or the melancholic, and the slow. The young painters, to ridicule the persevering labours of DOMENICHINO, which were at first heavy and unpromising, called him "the great ox;" and Passeri, while he has happily expressed the still labours of his concealed genius, _sua taciturna lentezza_, his silent slowness, expresses his surprise at the accounts he received of the early life of this great artist. "It is difficult to believe, what many assert, that, from the beginning, this great painter had a ruggedness about him which entirely incapacitated him from learning his profession; and they have heard from himself that he quite despaired of success. Yet I cannot comprehend how such vivacious talents, with a mind so finely organised, and accompanied with such favourable dispositions for the art, would show such signs of utter incapacity; I rather think that it is a mistake in the proper knowledge of genius, which some imagine indicates itself most decisively by its sudden vehemence, showing itself like lightning, and like lightning passing away."