两句以“谦恭但不失尊严，迁就但不失正直”，告诫人们为人处世要不卑不亢，能迁就忍让又坚持原则。

我们必须投资于不仅能提高效率而且能减少环境影响的技术。

Waste is just raw material in the wrong place.

The major credit I think Jim and I deserve... is for selecting the right problem and sticking to it.

The best revenge is massive success.

〈军人精神教育〉，在桂林对滇赣粤军的演说，1921年12月10日

Something deeply hidden had to be behind things.

墙不会倒下。