The lectures from the Kavli Institute for Theoretical Physics’ conference on The Future of Physics are available online. Among the speakers were David Gross, Steven Weinberg, Frank Wilczek, and Edward Witten. Panels participants included Juan Maldacena, Roger Penrose, and Leonard Susskind.
“The conference opened with a review of all the exciting developments in theoretical physics in the last 25 years and closed with a special session in which the participants were asked to predict what exciting developments will occur in physics in the next 25 years.”