数学不是一项观赏性运动。你必须亲自去做才能理解它。
Mathematics is not a spectator sport. You have to do it to understand it.
"Social media is the ultimate way to connect with fans, and I love being able to share my life and music with them in real time."
书籍是飞机，是火车，是道路。它们是目的地，也是旅程。它们是家。
即使有天下最容易生长的植物,晒它一天,又凉它十天,没有能够长大的。比喻做事一日勤,十日怠,没有恒心,是不会成功的。