The money in our hand is a tool to keep free; the money we seek is a tool to make yourself a slave.
我们手里的金钱是保持自由的一种工具;我们所追求的金钱,则是使自己当奴隶的一种工具。
数学的真正力量在于它简化复杂事物的能力,使不可理解的事物变得可理解。
Every challenge is an opportunity to grow.
The task of the modern educator is not to cut down jungles, but to irrigate deserts.
我认为,人生中最快乐的时刻是出发前往未知的土地。
永恒只是一瞬间,刚够开一个玩笑。