世界因你的榜样而改变，而不是因你的观点。
The world changes by your example, not by your opinion.
Mathematics is not just a tool; it is a way of thinking.
I earnestly wish to point out in what true dignity and human happiness consists.
建立在规则上的自由，才是真正的自由！
None but the brave deserves the fair.
A great biography should be like a portrait that captures both the light and the shadow.
A friend is someone who knows all about you and still loves you.
The snake has to shed his skin before he can grow.
法律不是被制定的；它是自己生长和发展的。