Notable as a twentieth-century leader of the Spiritism movement, this psychic medium wrote nearly five hundred books using a channeling/ automatic writing process called "psychography."
He became aware of his psychic ability when he was just four years old.
In 1930, Xavier was sued for copyright infringement by the widow of Brazilian writer Humberto de Campos for publishing a book that he said the spirit of de Campos had psychically dictated to him.
He was born in Pedro Leopoldo, Brazil, to Catholic parents Maria Joao de Deus and Joao Candido Xavier.
He was a practitioner of Spiritism, the spiritual tenets of which had been laid out by nineteenth-century French writer Allan Kardec.