 He collected materials for a dictionary of rare and difficult Hebrew words, with critical and philological observations; and when he was about eleven years old translated from the Hebrew Tudela’s "Itinerarium".At 14, he was admitted master of arts at Halle, and received into the Royal Academy at Berlin, while working on a method to calculate longitude at sea.The last years of his short life he devoted to the study of history of the Jewish people and antiquities, did translations, and had collected materials for histories of the Thirty Years' War and of Antitrinitarianism, and for an inquiry concerning Egyptian antiquities.