Invention is the mother of necessity.

You have to be willing to sacrifice, to put in the time and effort.

Don‘t waste your time on a man/woman， who isn‘t willing to waste their time on you。

开始总是在今天。

与他人说话时，要留有余地，别把心里想说的全部讲出来；画虎的形态很简单，但画出骨骼却很难；熟悉人的面貌很容易，但真正了解一个人的内心却很难。