Time and Transcendence provides a new theory of secularization in the Catholic context, a new interpretation of the origins of modern historical science, and a new reading of Heidegger's theories of time and history. The author shows how a secular sense of the past evolved in early modern French memoirs. Memoirs uncovered a level of personal experience that was then applied as an intuitive framework for the study of history. Modern history's scientific study of sources is embedded in the imaginative sense of a personal past.