ABSTRACT
It was Frege who rst emphasized the existence of a philosophical connection between the concept of identity and the problems of reference. Frege explains their relationship in his important 1892 essay, “Über Sinn und Bedeutung” (“On Sense and Reference”). Frege’s essay, undoubtedly one of the most in uential writings in the history of philosophy, sets the agenda for much of contemporary philosophy of language, as much for logicians and philosophers who take issue with its central teachings as for those who consider themselves modern-day Fregeans.
