要快乐，既需要忘记，也需要记住。

The PAC learning framework provides a formal way to analyze the efficiency and effectiveness of learning algorithms.

荒野是一个充满挑战的地方。要生存，你必须直面它们。

Success is relative: It is what we can make of the mess we have made of things.

Technology and tradition must work hand in hand. The wisdom of the past can guide the innovations of the future.

写吧，否则就会死去。

对付不自由的世界的唯一方法，就是变得如此绝对自由，以至于你的存在本身就是一种反抗。

暂时的东西有时比永久的东西更有力量。