去做对他人有益的事情。

The most effective way to destroy people is to deny and obliterate their own understanding of their history.

柴油发动机是当今已知效率最高的原动机。

I'm just trying to live my life the best way I know how.

凡事天下要考察有无的原则，必定是以众人的耳目所见所闻的实情以知有与无来作为标准的。