Liberty consists in doing what one desires.

Stop acting as if life is a rehearsal. Live this day as if it were your last. The past is over and gone. The future is not guaranteed.

译文：如果得了财产却损失了自己的德行，这样的行为我是不会去做的。

自由的代价是永恒的警惕。

Every saint has a past, and every sinner has a future.

每个数学问题都有解决方案，但并非每个解决方案都显而易见。

保持谦逊，永远不要忘记你来自哪里。