Stephen Hawking
Year unknown
Reinhold Beckmann, Martin Bojowald, Vince Ebert, Brian Greene, James Hartley, Sabine Hossenfelder, Harald Lesch, Michio Kaku, Roger Penrose, Ian Stewart, Frank Strickstrock, Ulrich Walter, Christoph Krachten, Leonard Mlodinow, Judith Croasdell, Marika Taylor, and Hubert Mania
