“…Solamente dos profesores de la Wharton Business School, desde la lejanía y la independencia que da una prestigiosa universidad americana, podían atreverse a penetrar con objetividad y profundidad en esta apasionante aventura. …”

“…Using his own cutting-edge research as a professor at Wharton Business School, Adam Grant shows how helping others can lead to greater personal success. …”

“…Cohen draws on his experience as a research and teacher’s assistant at Wharton Business School with an investment expert—and his mentor—Dr. …”