天長地久。天地所以能長且久者，以其不自生，故能長生。是以聖人後其身而身先；外其身而身存。非以其無私耶？故能成其私。
天地久存，因為它們不僅為自身而存在。
因此，智者將他人置於自己之前，即便忘記了自我，也會表現出色。他們之所以能實現他們想要的，是因為他們並不過於關注自己。
The sky and earth stay around for a long time because they do not act only for themselves.
That's why wise people put others before themselves, and even though they forget about themselves, they do well.
They achieve what they want because they're not too focused on themselves.
