子务为义,翟又将予子天下。
你只要努力做义事,我还要把天下送给你。 
The task of psychology is to discover the laws of mental structure.
《在广州石围塘检阅滇均的演说》(1924年4月4日)
The most important skill for an economist is the ability to think clearly about trade-offs.
The secret of life is to appreciate the pleasure of being terribly, terribly deceived.