 Though he was largely ignored during his lifetime, Giuseppe Peano (1858–1932) and Bertrand Russell (1872–1970) introduced his work to later generations of philosophers.His contributions include the development of modern logic in the "Begriffsschrift" and work in the foundations of mathematics.His book the "Foundations of Arithmetic" is the seminal text of the logicist project, and is cited by Michael Dummett as where to pinpoint the linguistic turn.