Chuang Tzu is correct: why aspire to be clever or wise? (Besides, who in their right mind would, or could, claim to be clever or wise?) If it is serenity and contentment that we seek (I see no reason to grasp after "happiness," whatever that may be), idle drifting seems to be the proper course of action. But one mustn't equate idleness with sloth, disinterest, or ennui: it is an active state of being that requires attention, patience, receptivity, and humility. One never knows when a message may arrive.