天下之理,终而复始,所以恒久而不已。
天下的道理,循环往复,所以能够永恒不息。
片刻是时间的一小部分,但它可能是非常重要的一部分。
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.