The only way to avoid being miserable is not to have enough leisure to wonder whether you are happy or not.
经济学家需要三种伟大的智力才能:感知、想象和理性;而最重要的是他需要想象力。
"I am not young enough to know everything."
对人工智能中逻辑系统的研究不仅仅是关于算法,更是关于理解推理的本质。