To Einstein’s remark – “You will become a great man,” the comedian Chaplin replied: “I admire you even more. No one in the world understands your theory of relativity, and yet you have become a great man.” And if the scientific theories of the greats are not clear to everyone, then we all like the humor of the greats. The physicist Einstein not only talentedly presented his theories, but also knew how to joke on occasion. His colleague, the world-renowned physicist Landau, had the same quality. However, as some argue, humor is the most characteristic feature of the Jewish people. While most nations joke about their own shortcomings and weaknesses, the Jewish people, with the help of humor, know how to assert their dignity and their superiority over others. The book contains a wide range of Jewish humor and witticisms, drawn from life situations, literary sources and folklore. A variety of people - from Einstein, Landau and many other prominent representatives of the Jewish intelligentsia - will appear before readers from the most unexpected angles, causing, if not laughter, then a wide smile.