A mathematician's work is never done; there are always more problems to solve.
"Books are the keys to understanding the world and ourselves."
Words have the power to heal wounds or deepen them; the writer must choose wisely.
我们今天关于海洋资源的每一个决定都会产生涟漪，影响子孙后代。
The more you love yourself, the less nonsense you'll tolerate.
真正的英雄是那些即使害怕也坚持战斗的人。