在计算学习的背景下，“可能近似正确”（PAC）学习的概念为理解学习算法的效率和可行性提供了一个框架。

The security dilemma is a fundamental feature of international politics, as states' efforts to increase their own security often decrease the security of others.

The right of nature...is the liberty each man hath to use his own power as he will himself for the preservation of his own nature.

我总是相信自己能赢，但我知道这并不容易。

I have often been asked how my plays come about. I cannot say. Nor can I ever sum up my plays, except to say that this is what happened. That is what they said. That is what they did.

The stage is my home. That's where I feel most comfortable.

The purpose of business is not just profit but contributing to society.

The key to success is to focus on goals, not obstacles.

动物和人类的有目的行为。

We all want to be told stories, and we all want to tell stories. It's one of the things that makes us human.

I'm not a person who likes to be ignored.

The most important thing in the programming language is the name. A language will not succeed without a good name. I have recently invented a very good name and now I am looking for a suitable language.