Now a lady wrote me this week and asked me if I could throw some light on this. She said, “I found myself in a dormitory. I recall the dormitory, for I was in that school from the age of 12 to 18. But here you are as an instructor, and you are teaching all of us how to solve puzzles. You did not actually do it for us; you allowed us to use our own talents, but you are instructing. You were the instructor teaching us how to solve puzzles, leaving us full freedom to make our own efforts. Then you sat next to me, and you asked me this, — and this puzzled me because I do not understand what it means. You asked me, ‘Do you know what twenty-seven is?’” Do you know what twenty-seven is? Now she said, “I do not, and I cannot throw any light on it whatsoever. If you can throw some light on it, please do.”188 ¶35