记忆是个奇怪的东西。它不像我以为的那样运作。它不是可以重播的电影。它更像是一个你讲给自己的故事，而每次讲述这个故事都会改变。
The best structures are those that disappear into their function.
Sometimes it’s the journey that teaches you a lot about your destination.
Society is well governed when its people obey the magistrates， and the magistrates obey the law.
The PAC learning framework provides a formal way to analyze the efficiency and effectiveness of learning algorithms.