The malediction of the old man seems to have clung to Shelley's mind to the end, and made him rebellious against everything bearing the paternal name. He assailed the Father of the Hebrew theocracy with amazing bitterness, and joined Prometheus in cursing and dethroning Zeus, the Olympian usurper. With him, tyrant and father were synonymous, and he has drawn the old Cenci, in the play of that name, with the same fierce, unfilial pencil, dipped in blood and wormwood. Shelley was by nature, self-instruction, and inexperience of life, impatient and full of impulse; and the sharp and violent measures by which they attempted to reclaim him only exasperated him the more against everything respected by his opponents and persecutors. Genius is by nature aggressive or retaliatory; and the young poet, writhing and laughing hysterically, like Demogorgon, returned the scorn of society with a scorn, the deeper and loftier in the end, that it grew calm and became the abiding principle of a philosophic life. It was the act of his father which drove Shelley into such open rebellion against gods and men. Very probably, though he might have lived an infidel in religious matters, like tens of thousands of his fellows, he would not have written, or, at least, published, such shocking things, if his father had been more patient with a youth so organized. But parents have a right to show a terrible anger when thwarted by their children, and in this case the father too much resembled the son in wilful impetuosity of temper. Turned out of his first home, Shelley went wandering forth by land and sea,--a reed shaken by the wind, a restless outcast yearning for repose and human sympathy, and in this way encountering the questionable accidents of his troubled, unguarded life, and gathering all the feverish inspiration of his melancholy and unfamiliar poetry.