The only way to learn mathematics is to do mathematics.
学习数学的唯一方法就是做数学。
数学的真正力量在于它能够揭示支配宇宙的隐藏模式和结构。
你是我永远不会忘记的人。
每张脸都隐藏着一个故事,每个故事都隐藏着一张脸。
We are all capable of change, but we have to believe it's possible first.
A picture must be a thing in itself, not a representation of something else.