"Books are the way that we communicate with the dead. The way that we learn lessons from those who are no longer with us, that humanity has built on itself, progressed, made knowledge incremental rather than something that has to be relearned, over and over."
书籍是我们与逝者沟通的方式。是我们从那些不再与我们同在的人那里学习教训的方式，人类以此为基础，取得进步，使知识逐渐积累，而不是一次又一次地重新学习。
成绩差距主要是知识差距。
逻辑法则不是心理法则，而是思维法则的法则。
The mind is not a passive recipient of sensory information but an active participant in the process of perception.
韧性是通过克服挑战建立起来的。