Friedrich Nietzsche
Friedrich Nietzsche, a German philosopher, began his career when he was only 24 years old and was appointed Chair of Classical Philology at a German university. In particular, he discussed his “death of God” theology, which was first mentioned in his published works in 1882. He also discussed other radical perspectivist concepts.
Nietzsche had serious health problems that required constant attention from his mother and later his sister. It was found that his sister had been revising his unpublished writings, altering their meaning to match her own opinions and contradicting his.
Sigmund Freud
The father of psychoanalysis, Sigmund Freud, made significant contributions to the fields of psychology, psychiatry, and psychotherapy during his lifetime (1856–1939).
He created therapeutic methods like free association and identified transference, which are still used in Western culture today. He also investigated how thoughts affect the unconscious mind and how to interpret dreams.