《淮南子·缪称训》
反过来说，不注意自身的修养，却想企盼远大目标的实现，行不通的这是。知道行善的道理是容易的，但亲身行善就难了。
释近斯远，塞矣。闻善易，以正身难。
On the other hand, if you do not pay attention to your own cultivation, but still want to achieve great goals, it is impossible. It is easy to know the truth of doing good, but it is difficult to do good in person.