Hans Bethe

Hello, my name is Hans Bethe. My story begins on July 2nd, 1906, in Strasbourg, which was part of Germany at the time. From a very young age, I was completely fascinated by numbers. I saw the world as a giant puzzle, and I believed mathematics was the key to solving it. My father was a university professor, and he saw my curiosity and encouraged it every step of the way. He filled our home with books and ideas, which fueled my passion for science. This love for learning led me to study at universities across Germany. I worked incredibly hard, and in 1928, I earned my doctorate in physics. I was filled with excitement, ready to dedicate my life to exploring the deepest mysteries of the universe, from the tiniest atoms to the largest stars.

My life took a sudden and difficult turn in 1933. The Nazi party rose to power in Germany, and their laws changed everything. Because my mother was Jewish, I was dismissed from my university position. I could no longer work in the country I called home, and I knew I had to leave. It was a time of great uncertainty. I first moved to England, trying to find a place where I could continue my work. Then, in 1935, an incredible opportunity arose, and I moved to the United States to become a professor at Cornell University. America welcomed me, and it quickly became my new, beloved home. It was there, surrounded by fellow scientists who valued freedom and inquiry, that I made one of my most important discoveries. In 1938, after countless hours of calculation and thought, I finally figured out the complex chain of nuclear reactions that power the Sun and all the other stars in the sky. It felt like I had uncovered one of the universe's greatest secrets.

By 1941, I felt so grateful to my new country that I proudly became an American citizen. But the world was in turmoil. World War II was raging, and I knew I had a responsibility to use my scientific knowledge to help defend freedom. In 1943, I received a call to join a top-secret mission. I moved with my family to a hidden town built in the desert of New Mexico called Los Alamos. This was the home of the Manhattan Project. My role was to be the head of the Theoretical Division. It was an enormous and very serious responsibility. My team and I were tasked with solving the complex physics problems needed to build the first atomic bomb. We worked day and night, knowing that the outcome of the war could depend on our success. It was the most challenging work of my life, and it carried a weight I would think about for the rest of my years.

When the war ended, the world was forever changed by the power we had unlocked. I felt a profound duty to ensure that this new atomic energy was used for good and not for destruction. My scientific work continued, and in 1967, I was given an incredible honor: the Nobel Prize in Physics. The award recognized my discovery from 1938 about how stars generate their energy. While I was proud of this achievement, I became an even stronger voice for peace and the control of nuclear weapons. During the 1950s, I advised the United States government against building even more powerful bombs. Later, in the 1980s, I spoke out against a proposed missile defense system that was nicknamed 'Star Wars,' because I feared it would make the world less safe. I firmly believed that scientists have a special responsibility to think about the consequences of their work and to guide humanity toward a more peaceful future.

I spent the rest of my career teaching and conducting research at Cornell University, a place I loved. It was a long and fulfilling life filled with discovery and purpose. I lived to be 98 years old. When people look back on my life, I hope they remember me for two things. I hope they remember the scientist who helped figure out the secrets of the stars, but just as importantly, I hope they remember the citizen who spent a lifetime working to use the power of science to build a safer and more peaceful world for everyone.