“A man's ethical behavior should be based effectually on sympathy, education, and social ties and needs; no religious basis is necessary. Man would be in a poor way if he had to be restrained by fear of punishment and hopes of reward after death.”

German-born theoretical physicist

Albert Einstein was a German-born theoretical physicist known for developing the theory of relativity. He also made major contributions to quantum theory and was awarded the 1921 Nobel Prize in Physics for his work on theoretical physics, especially his discovery of the law of the photoelectric effect. Einstein is closely associated with mass-energy equivalence, expressed in the formula E = mc2, which comes from special relativity and has been called the world’s most famous equation. His work reshaped modern physics and continues to define how his name is remembered.