Einstein is the great scientist of the twentieth century and notable physicist of all time. It is told that he had learning disability in his childhood. He could not talk till he was three and could not read till he was eight. Despite such problems he later became the noble prize winner for his contribution to the Physics. His theory of relativity is considered as a revolutionary development of Physics. He got Noble Prize in Physics in 1921 for his explanation of the Photoelectric Effect and for his research in Theoretical physics.