We choose to go to the moon in this decade and do the other things, not because they are easy, but because they are hard, because that goal will serve to organize and measure the best of our energies and skills, because that challenge is one that we are willing to accept, one we are unwilling to postpone, and one which we intend to win, and the others, too.

模形式的算术是理解数论更深奥谜团的关键。

建筑是关于创造关系，而不仅仅是形式。

I don't need a reason to be happy. I choose to be.

A melody can stay with you forever.

交易的成功来自于不断的学习和适应。