领导力是关于做出艰难的决定，而不仅仅是发号施令。

成功投资的关键是清楚地理解市场、涉及的风险以及纪律性的方法。

书籍是最安静、最恒久的朋友；它们是最易接近、最睿智的顾问，也是最耐心的老师。

The state, therefore, has not existed from all eternity. There have been societies that did without it, that had no notion of the state or state power. At a certain stage of economic development, which was necessarily bound up with the split of society into classes, the state became a necessity.

算法的美在于它们能够用简单的步骤解决复杂的问题。

在计算学习领域，关键不仅在于学习，而在于高效地学习。