In this regard, he wrote, 'Don't damage a borrowed book; when you borrowed a book, read it immediately and return it promptly; however, I hope good books will be read by many people.'
借りた本を傷めるな、借りたらすぐ読んで早く返せ、けれど良い本は多くの人に読んで貰いたい、などの考えを記している。