生活就像一首歌，有高潮也有低谷，但每一段都是珍贵的。
Life is like a song, with highs and lows, but every part is precious.
数学是将复杂转化为清晰的艺术。
The advancement of mathematics is due to those who are driven not by the desire for application but by the joy of discovery.
We are all prisoners of our own experiences, and it is only through understanding others that we can free ourselves.
对付一个不自由的世界的唯一方法就是变得如此绝对自由，以至于你的存在本身就是一种反叛行为。
人与人每次见面，如果都好像刚认识时那样，那么即使相处到老，也不会相互有怨恨之心。
