In 1915 Einstein, who was then 36, was living in wartime Berlin with his cousin Elsa, who would eventually become his second wife. His two sons, Hans Albert Einstein and Eduard “Tete” Einstein were with his estranged wife Mileva in neutral Zurich.
After eight long years of effort his theory of general relativity, which would propel him to international celebrity, was finally summed up in just two pages. Flush with his recent accomplishment, he sent his 11-year-old Hans Albert the following letter, which is found in Posterity: Letters of Great Americans to Their Children.
Follow your curiosity and read letters from Hunter S. Thompson, Eudora Welty,van Gogh, Charles Bukowski, and Richard Feynman.
This piece originally appeared on Farnam Street.
Join over 50,000 readers and get a free weekly update via email here.
Read next: The Future of Education According to Generation Z
Listen to the most important stories of the day.
- Succession Was a Race to the Bottom, And Everybody Won
- What Erdoğan’s Victory Means for Turkey—and the World
- Why You Can't Remember That Taylor Swift Concert All Too Well
- How Four Trans Teens Threw the Prom of Their Dreams
- Why Turkey’s Longtime Leader Is an Electoral Powerhouse
- The Ancient Roots of Psychotherapy
- Drought Crisis Spurs U.S.-Mexico Collaboration
- Florence Pugh Might Just Save the Movie Star From Extinction