我的语言的界限即是我的世界的界限。

Mathematics is the art of turning complexity into clarity.

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.

The best way out is always through.

Psychology is a science, and teaching is an art; and sciences never generate arts directly out of themselves.

We look at the world once, in childhood. The rest is memory.