心智是一个计算器官的系统，通过自然选择设计来解决我们祖先在觅食生活方式中面临的各种问题。
The mind is a system of organs of computation, designed by natural selection to solve the kinds of problems our ancestors faced in their foraging way of life.
To teach how to live without certainty and yet without being paralyzed by hesitation is perhaps the chief thing that philosophy， in our age， can do for those who study it.
冲去污浊的水，扬起清澈的水流；废除贪婪，树立廉洁
保持饥饿，保持愚蠢，但也要保持年轻。
做出伟大工作的唯一方法就是热爱你所做的事。