世界是一本書,不旅行的人只讀了一頁(yè)。
What you are you do not see,what you see is your shadow,
Mathematics is not a spectator sport—you have to engage with it to appreciate its beauty.
在這個(gè)不斷試圖改變你的世界里做你自己,是最大的成就。
Kindness is the key to happiness.