名誉如同珍宝，一旦失去，再难获得。

Reputation is a treasure that, once lost, can never be won back.

youdao

一旦失去美德，人就是最不讲道德、最为凶残的野兽。

When he is without virtue, man is the most unscrupulous and savage of the animals.

youdao

一旦失去这次机会你就很难找回。

Once losing this chance, you can't easily find it.

youdao

Therefore, when he is without virtue, man is the most unscrupulous and savage of the animals."

因此,一旦失去美德,人就是最不讲道德最为凶残的野兽"

耶鲁公开课 - 古希腊历史简介课程节选