Life is like a song, with highs and lows, but every part is precious.
生活就像一首歌,有高潮也有低谷,但每一段都是珍贵的。
Man is the creator of his destiny, not its slave.
数学不是一项观赏性运动。你必须参与其中。
If you want to make a difference, you have to be willing to take risks.