1859 Born in Prostejov (Prossnitz) Moravia (now the Czech Republic). Attended elementary school in Prostejov, then gymnasia in Vienna and Olmütz.

1876 Enrolled at University of Leipzip. Studied mathematics, physics, astronomy, attending philosophy lectures in his spare time.

1878 Transferred to Friedrich-Wilhelm University of Berlin, where he studied mathematics under Karl Weierstrass. Received a Ph.D. in mathematics from University of Vienna in 1883

1884-1886 Declining a position in mathematics at Berlin, he remained in Vienna to study philosophy, attending the philosophical lectures of (philosophical psychologist and neo-Thomist) Franz Brentano. He was attracted by Brentano's rigorously "scientific" conception of philosophy.

1885 Moved to University of Halle under Brentano's advice; published Philosophy of Arithmetic (1891)

1901 Moved to the University of Gottingen and spent the next sixteen years publishing a number of important works, including Ideas: General Introduction to Pure Phenomenology (1913).

1917 His last post at University of Freiburg, where he taught until he retired in 1928.

1938 Died in Berlin