"Albert Einstein" was a German-born theoretical physics/theoretical physicist and philosophy of science/philosopher of science. He developed the general theory of relativity, one of the two pillars of modern physics (alongside quantum mechanics). He is best known in popular culture for his mass–energy equivalence formula (which has been dubbed "the world's most famous equation").David Bodanis, E = mc2: A Biography of the World's Most Famous Equation (New York: Walker, 2000). He received the List of Nobel laureates in Physics/1921 Nobel Prize in Physics "for his services to theoretical physics, and especially for his discovery of the law of the photoelectric effect. The latter was pivotal in establishing Introduction to quantum mechanics/quantum theory.If you enjoy these quotes, be sure to check out other famous physicists! More Albert Einstein on Wikipedia.