《管子·君臣下》
对自己要求的多，德行就可以树立；对百姓要求的少，百姓就易于供应。
所求于己者多，故德行立。所求于人者少，故民轻给之。
The more you require of yourself, the easier it will be to establish your virtue. The less you demand of the people, the more easily they will comply with you.