世界上的一切存在都是为了最终进入一本书。

成功不是终点，失败也非致命，重要的是继续前进的勇气。

The light is what guides you home, the warmth is what keeps you there.

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.

实现明天的唯一限制是我们今天的疑虑。