William Empson William Empson began to teach English literature in a Japanese University when he was 25 years old. At that time he had already been the author of a great book, Seven Types of Ambiguity and it was so good that he was quite young. As a method to radiate his youthfulness which was filled with energy, he decided to come to university by motorcycle. With his hair steaming out in the wind, his eyes widely opened, he held the handle bars tightly, not fussing over the speed limit to rend the wind in early summer as well as ride into university with a sound like “da, da, da, da”. It was, indeed, a spectacular sight.