The Systeme of the World: in Four Dialogues is the original 1661 English translation, by Thomas Salusbury, of Galileo Galilei's DIALOGO sopra i due MASSI SISTEMI DEL MONDO (1632). Galileo's publication is more generally recognized under the title of Stilman Drake's English translation, Dialogue Concerning the Two Chief World Systems, published in 1953. A revised and annotated edition of the Salusbury translation was also introduced in 1953 by Giorgio de Santillana under the title Dialogue on the