This is the map that shows us where we're going. And this is the map that shows us where we've been. And it's never ever ugly.

True knowledge comes from inner insight.

没有什么比女人有幽默感—或男人没幽默感更破坏爱情的。+

在战争中，任何拖延都是危险的。

In the context of computational learning, the concept of 'probably approximately correct' (PAC) learning provides a framework for understanding the efficiency and feasibility of learning algorithms.