General Relativity

Leonard Susskind is the Felix Bloch Professor in Theoretical Physics at Stanford University. He is the author of Special Relativity and Classical Field Theory and Quantum Mechanics (with Art Friedman), and the New York Times–bestselling The Theoretical Minimum (with George Hrabovsky), among other books. He lives in Palo Alto, California. 
 
André Cabannes holds a PhD in statistics from Stanford University. He was a lecturer in mathematics at the Massachusetts Institute of Technology before turning to management consultancy and entrepreneurship, where among other things he was the translator of the Theoretical Minimum series into French. He lives in France.