Donatien Alphonse François, Marquis De Sade, was born in 1740 at Paris in the house of the great Condé. He belonged to a very noble, ancient, and distinguished Provençal family; Petrarch's Laura, who married a De Sade, was one of his ancestors, and the family had cultivated both arms and letters with success. He was, according to Lacroix, "an adorable youth whose delicately pale and dusky face, lighted up by two large black [according to another account blue] eyes, already bore the languorous imprint of the vice which was to corrupt his whole being"; his voice was "drawling and caressing"; his gait had "a softly feminine grace." Unfortunately there is no authentic portrait of him. His early life is sketched in letter iv of his _Aline et Valcourt_. On leaving the Collège-Louis-le-Grand he became a cavalry officer and went through the Seven Years' War in Germany. There can be little doubt that the experiences of his military life, working on a femininely vicious temperament, had much to do with the development of his perversion. He appears to have got into numerous scrapes, of which the details are unknown, and his father sought to marry him to the daughter of an aristocratic friend of his own, a noble and amiable girl of 20. It so chanced that when young De Sade first went to the house of his future wife only her younger sister, a girl of 13, was at home; with her he at once fell in love and his love was reciprocated; they were both musical enthusiasts, and she had a beautiful voice. The parents insisted on carrying out the original scheme of marriage. De Sade's wife loved him, and, in spite of everything, served his interests with Griselda-like devotion; she was, Ginisty remarks, a saint, a saint of conjugal life; but her love was from the first only requited with repulsion, contempt, and suspicion. There were, however, children of the marriage; the career of the eldest--an estimable young man who went into the army and also had artistic ability, but otherwise had no community of tastes with his father--has been sketched by Paul Ginisty, who has also edited the letters of the Marquise. De Sade's passion for the younger sister continued (he idealized her as Juliette), though she was placed in a convent beyond his reach, and at a much later period he eloped with her and spent perhaps the happiest period of his life, soon terminated by her death. It is evident that this unhappy marriage was decisive in determining De Sade's career; he at once threw himself recklessly into every form of dissipation, spending his health and his substance sometimes among refinedly debauched nobles and sometimes among coarsely debauched lackeys. He was, however, always something of an artist, something of a student, something of a philosopher, and