I have to tell you more about Lev Landau. Later we had many discussions, one of them even resulted in a joint publication. But I want to tell you now something of my political problems at that time. In Leipzig, in Göttingen, I met with many people with whom I could discuss politics in a way I never discussed it before. People like Heisenberg and his close friend and mine, von Reisecker, strong anticommunists, and people like Landau, a convinced idealistic communist. Remember the times around 1930, the time of the Great Depression, a time when it seemed appa-apparent that capitalism has disproved itself. I did not participate in those discussions a great deal but I listened very carefully. I knew communism from a rather unpleasant angle, from the early communism in Hungary but that was way in the past and now we were in the midst of something that looked like successful communism in Russia, unsuccessful capitalism in America and the rise of Hitler in Germany. What to think about all this. I did think. I did not come to a result. I came to doubts. Many people say now about me that I have been an early violent anticommunist. That is simply not true. At that time, I was full of questions. I came to decisions much later. And I came to decisions for a great number of reasons, of which I want to mention two that were decisive. I worked with one of my Hungarian friends, Tisza. He was one who competed with me for the Eötvös Prize and shared with me the Eötvös Prize in mathematics. He and I wrote a paper together. I really loved that paper. It seemed to give- belong, to a rotation of a dipole moment, a rotation of the whole molecule. And Tisza I- and I discovered that it was not due to a rotation, it was due to a peculiar modification of a vibration that looked like a rotation. We worked together, respected- we respected each other. And Tisza was a devoted communist. A little later, in the early '30s, he was arrested for having done some service to the communists in Hungary. I don't know and don't care what it was. It became quite clear that Tisza who was arrested aft- for a short time and then let go, would never have a career in physics - in science - in Hungary and where- he studied there; he did not have any prospects. So I decided to help him. I recommended him to Landau who had gone, gone back to the Soviet Union and who was working in Kharkov. Tisza went there and worked with Landau. And at a la- somewhat later time, maybe it was '34, '35, I think, I was already in the United States, he came back from Russia, completely disillusioned. He was a con- convin- convinced communist and that he certainly was no longer.