Metanoetics (from Greek: μετανόησις "conversion, repentance" from μετανοῶ "I repent"; Japanese: zangedō 懺悔道, dō 道 (path) and zange 懺悔 (metanoia)) is a neologism coined by Hajime Tanabe in Philosophy as Metanoetics to denote a way of doing philosophy that understands the limits of reason and the power of radical evil. Though the method used by Tanabe to reach this conclusion relies on the transcendental analysis developed by Kant, Tanabe aligns the method with the Buddhist concept of Absolute Nothingness and the preaching of Pure Land Buddhism, Zen, and Christianity.