The study of mathematics is a constant dialogue between the concrete and the abstract.

A love that makes breath poor, and speech unable.

"The best way to find yourself is to lose yourself in the service of others."

应对不自由世界的唯一方法是变得如此绝对自由，以至于你的存在本身就是一种反抗。

"The world breaks everyone, and afterward, some are strong at the broken places."

You don’t write because you want to say something; you write because you’ve got something to say.

【释义】凯根打破童年决定论：快乐童年未必护航成年，而经历过黑暗的孩子反而可能锻造韧性。

"The only thing that is truly beautiful is the soul."

你不应该认为对你来说难以掌握的东西是不可能的，如果是人类可以实现的，就应该认为它是可以实现的。