有时候你只需要振作起来继续前进。
Sometimes you just have to pick yourself up and carry on.
The true discovery of America is before us. The true fulfillment of our spirit, of our people, of our mighty and immortal land is yet to come.
The unexamined life is not worth living.
法律规范的有效性不在于它的实效性，而在于它的约束力。
天下的事情有难易之分吗？只要去做，难的也会变容易；不去做，容易的也会变难
数学是一项协作的努力。没有人可以单独完成。