(62) Practicing self-cultivation, as I see it, should be made a process characterized by a “dual subtraction”. What need to undergo the “dual subtraction” in the course of self-cultivation include <1> the deluded thoughts in a practitioner’s mind, and <2> his delusion-induced activities. The dual subtraction should keep going on until the minuend is nought. The moment the minuend disappears, the practitioner’s psyche becomes perfect and ready for Buddha-nature hiding therein to surface and prick his awareness.