没有艺术；没有文学；没有社会；最糟糕的是，持续的恐惧和暴力死亡的威胁；人的生活孤独、贫穷、肮脏、野蛮和短暂。
No arts; no letters; no society; and which is worst of all, continual fear, and danger of violent death; and the life of man, solitary, poor, nasty, brutish, and short.
Internal mental events are irrelevant to the scientific study of behavior.
"The greatest tragedy is not the brutality of the bad people, but the silence of the good people."
你不可能爱所有人，但你可以对所有人友善。
测量的精确性不仅仅是技术问题，更是拓展人类知识边界的关键。