The pure man of old did not mind having little, did not brag about accomplishments, and did not scheme about things. If [the opportunity] had gone, he would not regret and if he was in accord [with his lot in life] he did not feel satisfied with himself. Being of this character, he could scale heights without fear, enter water without getting wet, and go through fire without feeling hot. Such is the knowledge that can at last ascend to Tao.

(Tchuang Tzu)