Can one become a sage through learning?" -Yes." -Is there any essential way?" -Yes." -Please explain it to me." -The essential way is to [concentrate on] one thing. By [concentrating on] one thing is meant having no desire. Having no desire, one is vacuous (hsu, being absolutely pure and peaceful) while tranquil, and straight forward while in action. Being vacuous while tranquil, one becomes intelligent and hence penetrating. Being straightforward while active, one becomes impartial and hence all embracing. Being intelligent, penetrating, impartial, and all-embracing, one is almost a sage.

(Chow Tun-i)