《吕氏春秋·论·不苟论》
贤聪的君主对事情加以审察，认为不能做就不去做，认为可以做就去做。
故贤主察之，以为不可，弗为；以为可，故为之。
The wise monarchs examine things, if they think they shouldn't do it, they won't do it, if they think they can do it, they will do it.