This is "Shushin Setsuyaku" by Kido Rin, an educational thinker from the early Meiji period. It's an educational book that outlines the key points of "Shushin" – self-cultivation and moral education – based on Confucian ethics, written in an easy-to-understand literary style. It's also suitable for understanding the background of home education and the old educational system. The binding thread is loose in some places, but I think the condition is good for something over 100 years old. The items for sale are four volumes, from one to four. It has been stored in a smoke-free and pet-free environment.