When Albert Einstein applied at an institute to prepare himself to teach, he failed the entrance examination. His 
knowledge of botany, zoology, and languages was inadequate. A year later he passed the exam, but his academic 
work at the institute was not brilliant. After graduating from the institute, he alternated between unemployment 
and temporary teaching jobs. Finally, he got a steady job as a patent examiner and found time to work secretly on 
his theories. In 1905, when he was 26, he published his special theory of relativity. Worldwide fame followed