说出真相的唯一方式是无畏地言说。
To be happy, I must have my books and a piece of sky.
Life lessons will be presented to you in the order they are needed. Everything you need to master the lesson is within you. Once you have truly learned a lesson， you will be presented with the next one. If you are alive， that means you still have lessons to learn.
The essence of mathematics is not to make simple things complicated, but to make complicated things simple.
我们需要的书是那些能读懂我们的书。
出自北齐·颜之推《颜氏家训·文章》。书写文章要尊崇“三易”的原则，即文章内容要清晰明了，这是第一项。书写的文字要简单概要，这是第二项。书写的段落要读起来朗朗上口这是第三项。
Stay hungry, stay foolish.