The mathematician does not study pure mathematics because it is useful; he studies it because he delights in it and he delights in it because it is beautiful.

【大意】等到大寒节气到来时，冰霜寒雪从天而降，然后才能知道只有松柏能经得住严寒考验，依然繁茂。

表演最有回报的部分是与人们建立联系，理解他们的故事，并与世界分享这些故事。

It is necessary from the very nature of things that power should be a check to power.

幸福源自内心的平静。

最成功的领导者是那些倾听多于发言的人。