Leonard Susskind (Author) Leonard Susskind has been the Felix Bloch Professor in Theoretical Physics at Stanford University since 1978, and his online lectures are viewed all around the world. One of the fathers of string theory, he is the author of The Black Hole War and The Cosmic Landscape. Art Friedman (Author) Art Friedman is a life-long student of physics, and his career encompasses software engineering, teaching, and writing. When he's not busy puzzling over quantum entanglement, Art plays the fiddle.