拱把之桐梓,人苟欲生之,皆知所以养之者。至于身,而不知所以养之者,岂爱身不若桐梓哉?· Anybody who wishes to grow the tong (paulownia) or the zi
(catalpa),which may be grasped with both hands,knows by what means to nourish them. In the case of their own persons,men do not know by what means to nourish them. Is it that their regard of their own persons is inferior to their regard for a tong or a zi?