And are not the anxieties of even the most successful men of genius renewed at every work--often quitted in despair, often returned to with rapture? the same agitation of the spirits, the same poignant delight, the same weariness, the same dissatisfaction, the same querulous languishment after excellence? Is the man of genius an INVENTOR? the discovery is contested, or it is not comprehended for ten years after, perhaps not during his whole life; even men of science are as children before him. Sir Thomas Bodley wrote to Lord Bacon, remonstrating with him on his _new mode of philosophising_. It seems the fate of all originality of thinking to be immediately opposed; a contemporary is not prepared for its comprehension, and too often cautiously avoids it, from the prudential motive which turns away from a new and solitary path. BACON was not at all understood at home in his own day; his reputation--for it was not celebrity--was confined to his history of Henry VII., and his Essays; it was long after his death before English writers ventured to quote Bacon as an authority; and with equal simplicity and grandeur, BACON called himself "the servant of posterity." MONTESQUIEU gave his _Esprit des Loix_ to be read by that man in France, whom he conceived to be the best judge, and in return received the most mortifying remarks. The great philosopher exclaimed in despair, "I see my own age is not ripe enough to understand my work; however, it shall be published!" When KEPLER published the first rational work on comets, it was condemned, even by the learned, as a wild dream. COPERNICUS so much dreaded the prejudice of mankind against his treatise on "The Revolutions of the Heavenly Bodies," that, by a species of continence of all others most difficult to a philosopher, says Adam Smith, he detained it in his closet for thirty years together. LINNAEUS once in despair abandoned his beloved studies, from a too irritable feeling of the ridicule in which, as it appeared to him, a professor Siegesbeck had involved his famous system. Penury, neglect, and labour LINNAEUS could endure, but that his botany should become the object of ridicule for all Stockholm, shook the nerves of this great inventor in his science. Let him speak for himself. "No one cared how many sleepless nights and toilsome hours I had passed, while all with one voice declared, that Siegesbeck had annihilated me. I took my leave of Flora, who bestows on me nothing but Siegesbecks; and condemned my too numerous observations a thousand times over to eternal oblivion. What a fool have I been to waste so much time, to spend my days in a study which yields no better fruit, and makes me the laughing stock of the world." Such are the cries of the irritability of genius, and such are often the causes. The world was in danger of losing a new science, had not LINNAEUS returned to the discoveries which he had forsaken in the madness of the mind! The great SYDENHAM, who, like our