数学不仅仅是关于数字，而是关于模式、结构和关系。

The way a child holds a book tells you everything about how they feel about it.

Never underestimate the power of incremental improvements.

All violence consists in some people forcing others, under threat of suffering or death, to do what they do not want to do.

In the end, we only regret the chances we didn't take.

智者云：“话说出口之前，请三省自问。第一层自问，“信息是否为真？”，第二层自问：“有必要说么？”第三层自问：“是出于善意的么？”