对往日良辰只付之一叹，借纷繁景象把心事排除。

The study of mathematics is the indispensable basis for all intellectual and spiritual progress.

当每一分钱都要精打细算，犯错的空间就消失了。

Success is not about making money; it's about making a difference.

Adaptability is the key to survival in an ever-changing market.

书是一个永远不会评判你的朋友。

Rule of 7 in research. You can find out anything if you are willing to go seven levels. If the first source you ask doesn’t know， ask them who you should ask next， and so on down the line. If you are willing to go to the 7th source， you’ll almost always get your answer.