经过多次思考才去做某件事，做事中再跟据实际情况思考，这样才可以。

我们只有生活一次，所以要活得充实而真实。

Every experiment, whether successful or not, teaches us something valuable.

——在广东和朋友谈自己的主张，1921年

Literature is the expression of a feeling of deprivation, a recourse against a sense of something missing.

The spirit of moderation should also be the spirit of the legislator.

The best predictions come not from complex models, but from understanding fundamental incentives.

When someone tells you about the peak year of human history， the period of time when things were good before things went downhill， it will always be the years of when they were 10 years sold — which is the peak of any human’s existence.