Published on Mar 5, 2015 One hundred years ago, in November 1915, Albert Einstein achieved his long-sought theory of gravitation: the General Theory of Relativity. In developing the General Theory, Einstein brought together ideas from philosophy, mathematics, and physics, to create a remarkable new conception of gravity, space, and time. His work is a model of the engagement between philosophy and science that is the main mission of the Rotman Institute of Philosophy. To celebrate the achievements of the 20th century’s greatest philosopher-scientist, the Rotman Institute is pleased to announce Einstein@Rotman 2015 – a year-long program of activities for both scholars and the general public, centred around the stunning successes and enduring mysteries of Einstein’s ideas. In this inaugural lecture, you will learn how Einstein’s philosophical reflections on space, time, and gravity transformed our view of the nature and structure of the cosmos. Recorded at Wolf Performance Hall, London, Ontario, March 2nd, 2015.