You have to be strong enough to stand alone, smart enough to know when you need help, and brave enough to ask for it.

Life is ours to be spent, not to be saved.

黄金法则永远不会过时，它是所有其他美德的基础。（黄金法则：想要别人怎么对待你，你就要怎么对待别人）

数学之美只会向更有耐心的追随者展现。