My history hero: Carl Jung (1875–1961)

Carl Jung was a Swiss psychologist and psychiatrist. He enjoyed a close personal friendship with Sigmund Freud, the Austrian neurologist and 'father' of psychoanalysis, until the two fell out, in part over Freud's emphasis on sexuality. Jung went on to develop some of the best-known psychological concepts, such as the collective unconscious, the psychological complex, extraversion and introversion...

Swiss psychiatrist Dr Carl Jung in his library at home. (Photo by Dmitri Kessel/The LIFE Picture Collection/Getty Images)

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