Though he could have continued his education at one of many American graduate programs, Wolfe decided instead to travel to the University of Berlin, well-known at the time for its innovative curriculum. Upon arrival in Berlin, Wolfe began to pursue a degree in the classics with the intention of returning to the United States as a college or university professor. Very little is known about Wolfe's three-year stay in Germany, though it is known that he took a course in psychology and a noter entitled "Fundamentals of Experimental Psychology" in his second semester. Both classes were taught by Hermann Ebbinghaus.