He drew this book out of the bookshelf in his study and turned to the page containing the copyright information. "This book was published in 1937, and went through twenty printings by 1939," he says. "You can tell that it was read by a lot of people."
從學校研究室的書架上取出這本書，他翻開版權頁說，「這本書一九三七年出版，一九三九年就印了二十版，可見有多少人讀。」