Nietzsche's works did not reach a wide readership during his active writing career. However, in 1888 the influential Danish critic Georg Brandes aroused considerable excitement about Nietzsche through a series of lectures about Nietzsche's works he gave at the University of Copenhagen. In the years after Nietzsche's death in 1900, his works became better known, and readers have responded to them in complex and sometimes controversial ways.
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In 1903, Niels Bohr enrolled as an undergraduate at Copenhagen University. His major was physics, which he studied under Professor Christian Christiansen, the university's only professor of physics at that time. He also studied astronomy and mathematics under Professor Thorvald Thiele, and philosophy under Professor Harald Høffding, a friend of his father.
Source: Wikipedia
In his twenties Søren Kierkegaard went on to study theology at the University of Copenhagen.
Source: Wikipedia