Albert Einstein was a German-born physicist who developed the special and general theories of relativity. He was born in Ulm, Germany in 1879 and obtained his early education in Munich. He struggled in school initially but developed an interest in geometry at age 12. Einstein published over 300 scientific papers and 150 non-scientific works in his lifetime. He won the Nobel Prize in Physics in 1921 for his explanation of the photoelectric effect. Einstein is considered one of the most influential scientists of the 20th century.