Morality is not properly the doctrine of how we may make ourselves happy, but how we may make ourselves worthy of happiness.
道德不是关于如何使自己幸福的学说,而是关于如何使自己配得上幸福的学说。
相关系数的可能误差不是可以从第一原理推导出来的东西,而是必须通过经验找到的。
"Light is the key. Without light, there is no image."