有时我们为某些事感到悲伤，却不愿告诉别人。我们想保守这个秘密。或者有时我们感到悲伤，却真的不知道为什么悲伤，于是我们说我们不悲伤，但实际上我们是悲伤的。
Sometimes we get sad about things and we don’t like to tell other people that we are sad about them. We like to keep it a secret. Or sometimes, we are sad but we really don’t know why we are sad, so we say we aren’t sad but we really are.
互联网是人类建造的第一个人类自己都不理解的东西，是我们有史以来最大的无政府状态实验。
Understanding the mechanisms of memory can help us not only in recalling the past but also in shaping our future actions and decisions.
你不能靠你将要做什么来建立声誉。
To understand the mind, we must first understand its evolutionary purpose.
我常说，你永远不可能太努力工作。