Vices are sometimes only virtues carried to excess!
The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion.
艺术的可怕之处在于你不知道它会把你带向何方。
自身无灾无病，感受不到快乐，等到生病卧床，才了解到无灾无病的快乐；家中平安无事，感受不到快乐，等到祸事临头，才体会到平安无事的快乐。
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。