Challenges are opportunities in disguise; they push us to innovate and improve.

The best leaders don't create followers; they create more leaders.

【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。

认为对自由的信念总会导致胜利是错误的。我们必须时刻做好失败的准备。如果我们选择自由，那么我们必须准备同它一起消亡。