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年轻时你以为会有很多朋友。但随着年龄增长,你意识到一只手就能数得过来。
When you're young you think you're going to have lots of friends. But as you get older, you realize you can count them on one hand.
你不能让赞美或批评影响你。沉迷于任何一种都是弱点。
数学是一种创造性的努力,就像艺术或音乐一样。
The great thing about being old is that you don’t have to worry about the future.
"We are all apprentices in a craft where no one ever becomes a master."
生活的意义不在于你拥有多少,而在于你如何面对失去。
随机评估可以帮助我们了解发展中哪些措施有效,哪些无效。