Leadership is about empowering others to achieve their best, not just giving orders.

每个数学问题都有解答；挑战在于找到它。

History is, above all else, the creation and recording of that heritage; progress is its increasing abundance, preservation, transmission, and use.

书籍是飞机，是火车，是道路。它们是目的地，也是旅程。它们是家。