His essays on history were regarded on a par with Sorai OGYU's "Seidan" (discussion of law cases) and later with political essays such as Machiavelli's "Discourses on Livy."
かれの史論は、荻生徂徠の『政談』を経て、マキャヴェッリの『ディスコルシ』のような政論とも比べられる。