Brasseur began to write about Atlantis in his publication "Grammaire de la langue quichée" (1862), in which he expressed his belief that the lost land described by Plato had existed with an advanced degree of civilization before the beginning of civilizations in Europe and Asia. He suggested that the origins of European and Persian words could be traced to indigenous languages of the Americas and that the ancient cultures of the New and Old Worlds had been in constant communication with one another.