萨缪尔·韦斯特

Samuel West

饰：Himself - Narrator

Douglas Leonard

饰：Himself - San Diego State University

麦克斯·泰格马克

Max Tegmark

饰：Himself - Massachusetts Institute of Technology

加来道雄

Michio Kaku

饰：Self - City University of New York,(as Prof. Michio Kaku)

劳伦斯·M.克劳斯

Lawrence M. Krauss

饰：Self - Arizona State University,(as Prof Lawrence Krauss)