Einstein did not start speaking until he was about four years old, which worried his parents and led to concerns about his development.
Before gaining fame as a physicist, Einstein worked as a patent examiner at the Swiss Patent Office in Bern.
In 1905, known as his "miracle year," he published four groundbreaking papers that contributed significantly to the foundation of modern physics.
His most famous work, the theory of relativity, includes the iconic equation E=mc2E = mc^2E=mc2, which describes the relationship between mass and energy.
Einstein was awarded the Nobel Prize in Physics in 1921, not for his theory of relativity, but for his explanation of the photoelectric effect.
He often chose not to wear socks, finding them unnecessary and prone to developing holes.