"Years later I told Alexander Graham Bell of my introduction to the telephone. "Nobody," he said, "can estimate what the teachers of science in colleges and high schools were doing in those days not only to spread knowledge of the telephone but to stir youth to tackle the possibilities in electricity." What I best remember is not the telephone but Professor Tingley's amazing enthusiasm for the telephone. This revelation of enthusiasm, its power to warm and illuminate was one of the finest and most lasting of my college experiences. The people I had known, teachers, preachers, doctors, business men, all went through their day's work either with a stubborn, often sullen determination to do their whole duty, or with an undercurrent of uneasiness, if they found pleasure in duty. They seemed to me to feel that they were not really working if they were not demonstrating the Puritan teaching that labor is a curse. It had never seemed so to me, but I did not dare gloat over it. And here was a teacher who did gloat over his job in all its ramifications. Moreover, he did his best to stir you to share his joy."