Edmund Gustav Albrecht Husserl (Dr. phil. hab., University of Halle-Wittenberg, 1887; Ph.D., Mathematics, University of Vienna, 1883) was a philosopher who is deemed the founder of phenomenology. He broke with the positivist orientation of the science and philosophy of his day, believing that experience is the source of all knowledge, while at the same time he elaborated critiques of psychologism and historicism.
Born into a Moravian Jewish family, he was baptized as a Lutheran in 1887. Husserl studied mathematics under Karl Weierstrass, completing a Ph.D. under Leo Königsberger, and studied philosophy under Franz Brentano and Carl Stumpf. Husserl taught philosophy, as a Privatdozent at Halle from 1887, then as professor, first at Göttingen from 1901, then at Freiburg im Breisgau from 1916 until his 1928 retirement.