The provided text offers an extensive biographical and scientific overview of Albert Einstein, the German-born theoretical physicist. It meticulously details his personal life, including his multiple citizenships, education at institutions like the University of Zurich, marriages, and children, while also chronicling his professional career progression from a patent office assistant to a celebrated professor. Critically, the source highlights his monumental contributions to physics, such as the theories of general and special relativity, the photoelectric effect (which earned him the 1921 Nobel Prize), and the mass-energy equivalence equation $E=mc^2$. Additionally, the text addresses his political and philosophical views, including his commitment to pacifism, so ...