As a Neo-Confucian Scholar, Razan HAYASHI expounded a dualism in which all things are composed of "ri (reason)" and "ki (body)" and described an ideal by which reason would govern lust in the same way that laws govern phenomena.
林羅山は、朱子学者として、万物は「理」と「気」から成るとする理気二元論を説き、理法が諸現象を支配するのと同様に理性が情欲を支配することを理想とした。