Do not commit the error, common among the young, of assuming that if you cannot save the whole of mankind you have failed.

Do not commit the error, common among the young, of assuming that if you cannot save the whole of mankind you have failed.

不要犯年轻人常犯的错误，认为如果你不能拯救全人类，你就失败了。

-- Jan de Hartog 简·德哈托