过去是跟随你进入未来的影子。
The past is a shadow that follows you into the future.
君子学习的目的，只是为了追求真理。
In mining, safety isn't just policy - it's personal.
A good novel is a thought experiment with characters who breathe.
地球提供了足够的东西来满足每个人的需求，但不是每个人的贪婪。
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.