May 14, 1853.--Third quartet concert. It was short. Variations for piano and violin by Beethoven, and two quartets, not more. The quartets were perfectly clear and easy to understand. One was by Mozart and the other by Beethoven, so that I could compare the two masters. Their individuality seemed to become plain to me: Mozart--grace, liberty, certainty, freedom, and precision of style, and exquisite and aristocratic beauty, serenity of soul, the health and talent of the master, both on a level with his genius; Beethoven--more pathetic, more passionate, more torn with feeling, more intricate, more profound, less perfect, more the slave of his genius, more carried away by his fancy or his passion, more moving, and more sublime than Mozart. Mozart refreshes you, like the “Dialogues” of Plato; he respects you, reveals to you your strength, gives you freedom and balance. Beethoven seizes upon you; he is more tragic and oratorical, while Mozart is more disinterested and poetical. Mozart is more Greek, and Beethoven more Christian. One is serene, the other serious. The first is stronger than destiny, because he takes life less profoundly; the second is less strong, because he has dared to measure himself against deeper sorrows. His talent is not always equal to his genius, and pathos is his dominant feature, as perfection is that of Mozart. In Mozart the balance of the whole is perfect, and art triumphs; in Beethoven feeling governs everything and emotion troubles his art in proportion as it deepens it.