Hans Reichenbach

Born in Hamburg on September 26, 1891, Hans Reichenbach became one of the most important philosophers of science of his era. He studied physics, mathematics, and philosophy in Germany, and his writing often centered on how scientific knowledge works—especially in relation to probability, causality, geometry, and the nature of space and time.

Reichenbach was a central figure in the movement known as logical empiricism. In Berlin he helped found the Society for Empirical Philosophy, often linked with the Berlin Circle, and became known for bringing the newest developments in physics, especially Einstein’s theory of relativity, into philosophical debate. His work aimed to make philosophy clearer, more scientific, and more useful for understanding how evidence supports what we believe.

After leaving Nazi Germany, he continued his career in the United States and taught at UCLA until his death in Los Angeles on April 9, 1953. His books, including The Rise of Scientific Philosophy, introduced a wide audience to a vision of philosophy grounded in logic, science, and intellectual honesty, and they continue to influence discussions of science and knowledge today.