Sometimes you may feel like you’re not good enough, but you have to remember that you are a child of God and that you are loved.

每个数学问题都有解答；挑战在于找到它。

We are not born for ourselves alone.

The right of nature... is the liberty each man hath, to use his own power, as he will himself, for the preservation of his own nature; that is to say, of his own life.