Young Nietzsche left Pforta, in 1863, with the most various and incompatible scientific tastes and interests (always excepting in mathematics, for which he never possessed any aptitude), but, as he himself remarked, none that would fit him for any career. One point in regard to the termination of his school-life is noteworthy: he chose Theognis as the subject of his valedictory dissertation. His meditations on this moralist and aristocrat, so contemptuous of popular rule, may have served as the starting-point of some of his own later views on Greek culture. In 1864 he became a student at Bonn, and the year that followed was of special import in his inner development; he finally threw off the beliefs of his early youth; he discovered his keen critical faculty; and self-contained independence became a visible mark of his character, though always disguised by amiable and courteous manners. At Bonn his life seems to have been fairly happy, though he was by no means a typical German student. He spent much money, but it was chiefly on his artistic tastes--music and the theatre--or on little tours. No one could spend less on eating and drinking; like Goethe and like Heine, he had no love for tobacco or for beer, and he was repelled by the thick, beery good-humour of the German student. People who drink beer and smoke pipes every evening, he always held, were incapable of understanding his philosophy; for they could not possibly possess the clarity of mind needed to grasp any delicate or complex intellectual problem. He returned home from Bonn “a picture of health and strength, broad-shouldered, brown, with rather fair thick hair, and exactly the same height as Goethe;” and then went to continue his studies at Leipzig.