对任何模型的最大期望是它能提供一个对现实有用的近似。
"The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion."
Keep learning. It's the only way to stay relevant in a fast-changing world.
如果你没有得到奇迹,你仍然可以成为别人的奇迹。