If the goal is to improve education, then one has to ask hard questions Like does a technology actually help?

假如目标是提高教育，那就要问问这样的问题,技术真的有帮助吗？

麻省理工公开课 - 媒体、教育、市场课程节选

All right, so, what we need to ask ourselves, then, is, "What about the soul?"

那好,现在我们要问问自己,灵魂是什么

耶鲁公开课 - 死亡课程节选

Again, go to the math guys and say, "What's the answer to that?"

再去找那帮数学男们问问,"结果是什么"

耶鲁公开课 - 基础物理课程节选