He was familiar with some arts and he read Chinese classic books and foreign books, in addition, he was good at not only mathmatics but also poetry, Waka (Japanese poetry), paintings and Haikai (Japanese seventeen-syllable verse), but what he showed his great ability most was economics.
諸芸に通じ、漢籍、洋書を読み、数理も得意とし、詩、和歌、絵画、俳諧などもできたが、経済学に最も長けた。