It is not enough that we do our best; sometimes we must do what is required.
仅仅做到我们的最好是不够的,有时候我们得达到要求。
The pure work implies the disappearance of the poet as speaker.
倘若我们必须在我们为孩子布置的环境里生活一天,我相信那一定会是一个非常痛苦的经历。
行为有未能达到预期目的者,都要反过来要求自身做得更加完善。只有自己做得正,天下才会向你倾心。