Albert Einstein (1879-1955) was a renowned German-born physicist known for developing the theory of relativity, including the famous equation E=mc². His work revolutionized our understanding of space, time, and gravity. Einstein's contributions to physics, including his theories of special and general relativity, have had a profound impact on scientific knowledge. He was also a strong advocate for civil rights and international cooperation. Einstein's intellect and groundbreaking ideas continue to inspire and influence scientists and thinkers worldwide.