Medicine: The Explorer

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The dark, intense young man ambling through the great arcaded court at the University of Vienna was caught in fantasy. He was still a student, a nobody, a Jew in Franz Josef's Austria. Yet, as he admired the statues of great professors in the university's hall of fame, Sigmund Freud dreamed of a day when his own likeness would be there among the great; he even envisaged the inscription for it.

Today, 80 years since the dream and 100 years since Freud was born, his bronze image stands in that dusty hall of...