Albert Einstein returned to the Zurich Polytechnic, after attending secondary school at Arau and graduated there in the spring of 1900 as a secondary school teacher of mathematics and physics. By then he had given up German citizenship in favor of Swiss, to avoid the draft. He worked about two month as a mathematics teacher, before he was employed as examiner at the Swiss patent office in Bern. Having now a certain economic security he married Mileva Maric, his university girlfriend three years later.
Einstein became father in 1904 when his wife gave birth to his son Hans Albert.
Early in 1905 he published a thesis, "A New Determination of Molecular Dimensions" in the prestigious physics monthly "Analen der Physik" which won him a Ph.D. from the University and was the begin of the end for the old view of the universe.