The Meaning of Relativity by Albert Einstein
Einstein's series of lectures explains his groundbreaking theory of relativity. Written for a scientific audience, it explores concepts of space-time, gravity, and the relationship between matter and energy, revolutionizing modern physics and altering humanity's understanding of the universe.

Albert Einstein (1879–1955) was a German-born theoretical physicist who developed the theory of relativity, revolutionizing modern physics. His famous equation, E=mc², linked mass and energy. Einstein also contributed to quantum mechanics and was a vocal advocate for peace and human rights, earning the 1921 Nobel Prize in Physics.