I always called him "Sensei." I shall therefore refer to him simply as "Sensei," and not by his real name. It is not because I consider it more discreet, but it is because I find it more natural that I do so. Whenever the memory of him comes back to me now, I find that I think of him as "Sensei" still. And with pen in hand, I cannot bring myself to write of him in any other way. It was at Kamakura, during the summer holidays, that I first met Sensei. I was then a very young student. I went there at the insistence of a friend of mine, who had gone to Kamakura to swim. We were not together for...