十個盤坐九個瘋
Ten sitting in the lotus posture, nine insane
滿則損,謙受益
The full can only deplete, humility is beneficial
Ego is a notion which is meant pop out at a time or another in one's training. It is often seen as a, if not bad, at least something that one should rein in or reduce. Among their many claims, martial arts are supposed to train one's ego.