Leadership means making tough decisions today that will benefit everyone tomorrow.
我不害怕风暴，因为我正在学习如何驾驶我的船。
当你解决一个数学问题时，你不仅得到了答案，还理解了为什么这是答案。
The act of writing is an act of hope.
The true measure of a forest's worth isn't in board feet of timber, but in centuries of ecological balance.
I believe in the discipline of mastering the best that other people have ever figured out.
数学不知道种族或地理界限；对于数学来说，文化世界是一个国家。