His sister had left him; in September he was leading a painful and miserable life, a few features of which we can apprehend. He was avoided, for his agitated condition gave alarm. Often, on coming out of the University, he would meet Jacob Burckhardt. The wise historian would slip off by a clever manœuvre; he esteemed his colleague, but dreaded him. In vain Nietzsche sought to gather new disciples around him. "I am hunting for men," he wrote, "like a veritable corsair, not to sell them into slavery, but to carry them off with me to liberty." This unsociable liberty which he proposed failed to seduce the young men. A student, Herr Schaffler, has recorded his recollections: "I attended Nietzsche's lectures," says he; "I knew him very slightly. Once, at the end of a lecture, he chanced to be near me, and we walked out side by side. There were light clouds passing over the sky. 'The beautiful clouds,' he said to me, 'how rapid they are!' 'They resemble the clouds of Paul Veronese,' I answered. Suddenly his hand seized my arm. 'Listen,' said he; 'the holidays are coming; I am leaving soon, come with me, and we shall go together to see the clouds at Venice.' ... I was surprised, I stammered out some hesitating words; then I saw Nietzsche turn from me, his face icy and rigid as death. He moved away without saying a word, leaving me alone." The break with Wagner was his great and lasting sorrow. "Such a farewell," he wrote, "when one parts because agreement is impossible between one's manner of feeling and one's manner of judging, puts us back in contact with that other person, and we throw ourselves with all our strength against that wall which nature has set up between us and him." In February, 1879, Lisbeth Nietzsche wrote to Cosima Wagner: had her brother advised her to make the overture? Did he know of it? Did he approve of it? We cannot say. Cosima answered with an imperial and sweet firmness. "Do not speak to me of _Human, All Too Human,"_ she wrote. "The only thing that I care to remember in writing to you is this, that your brother once wrote for me some of the most beautiful pages that I know.... I bear no malice against him: he has been broken by suffering. He has lost the mastery of himself, and this explains his felony." She added, with more spirit than sense, "To say that his present writings are not definitive, that they represent the stages of a mind that seeks itself, is, I think, curious. It is almost as if Beethoven had said: 'See me in my third manner!' Moreover, one recognises as one reads that the author is not convinced by his work; it is merely sophism without impulse, and one is moved to pity."