Thus De Sanctis succeeded in keeping himself free from the Hegelian domination, at a moment when Hegel was the acknowledged master of speculation. But his criticism extended also to other German aestheticians. By a curious accident, he found himself at Zurich in the company of Theodore Vischer, that ponderous Hegelian, who laughed disdainfully at the mention of poetry, of music, and of the decadent Italian race. De Sanctis laughed at Vischer's laughter. Wagner appeared to him a corrupter of music, and "nothing in the world more unaesthetic than the Aesthetic of Theodore Vischer." His lectures on Ariosto and Petrarch, before an international public at Zurich, were delivered with the desire of correcting the errors of these and of other German philosophers and learned men. He gave his celebrated definitions of French and German critics. The French critic does not indulge in theories: one feels warmth of impression and sagacity of observation in his argument. He never leaves the concrete; he divines the quality of the writer's genius and the quality of his work, and studies the man, in order to understand the writer. His great fault is shown in substituting for criticism of the actual art work a historical criticism of the author and of his time. For the German, on the other hand, there is nothing so simple that he does not contrive to distort and to confuse it. He collects shadows around him, from which shoot vivid rays. He laboriously brings to birth that morsel of truth which he has within him. He would seize and define what is most fugitive and impalpable in a work of art. Although nobody talks so much of life as he does, yet no one so much delights in decomposing and generalizing it. Having thus destroyed the particular, he is able to show you as the result of this process, final in appearance, but in reality preconceived and apriorist, one measurement for all feet, one garment for all bodies. About this time he studied Schopenhauer, who was then becoming the fashion. Schopenhauer said of this criticism of De Sanctis: "That Italian has absorbed me _in succum et sanguinem_." What weight did he attach to Schopenhauer's much-vaunted writings on art? Having exposed the theory of Ideas, he barely refers to the third volume, "which contains an exaggerated theory of Aesthetic." In his criticism of Petrarch, De Sanctis finally broke with metaphysical Aesthetic, saying of Hegel's school that it believed the beautiful to become art when it surpassed form and revealed the concept or pure idea. This theory and the subtleties derived from it, far from characterizing art, represent its contrary: the impotent velleity for art, which cannot slay abstractions and come in contact with life.