當怒火慾水正騰沸處 明明知得 又明明犯著 知的是誰? 犯的又是誰? 此處能猛然轉念 邪魔便爲眞君矣 (前 119)
There is in case anger like burning fire or desire is like boiling water. The emotions can be instantly recognized at fronting that situation. Who is the one to knows it? Who is the one to react with it? If the heart boldly turning back from those emotions, the devil will change into an angel in no time. (Book1 119)
iris — "your mind, the universe"
Just changing heart makes hell to heaven. Because the both world are the boundaries of the beholder's mind.