Hans Bethe, a refugee from Nazi Germany, joined Cornell University's Department of Physics in 1935. Only 28 years old at the time, Bethe was world-renowned for his work in nuclear physics and on the Manhattan Project. In 1967, he was awarded a Nobel Prize for his work in astrophysics, "especially his discoveries concerning the energy production in stars." In 1999, at the age of 93, Bethe gave three lectures at Kendal of Ithaca, a retirement community; these lectures make use of "limited mathematics while focusing on the personal and historical perspectives of one of the principal architects of quantum theory whose career in physics spans 75 years." Fortunately for us, these lectures were recorded and are available for viewing on this website, accompanied by related resources of interests. These lectures include an introduction from Dr. Silvan S. Schweber, a physicist and Bethe biographer, and an appreciation by Edward E. Salpeter, who worked with Bethe. In addition these lectures have been edited to incorporate archival materials.