Sigmund Freud: Ikiba mu mutwe w'Umugabo

Segmund Freud ni umuhanga wabayeho hagati ya 1856-1939 akaba yari umuhanga mu byerekeranye n’imitekerereze y’abantu. Iki gishushanyo kikaba cyaramwitiriwe. Ngo :”iki mu mutwe w’umugabo ?”(what is in man’s mind !).