悲伤是爱变成了永恒的缺失。

The success of a learning algorithm depends on the quality and quantity of the data it is trained on.

That is what learning is. You suddenly understand something you've understood all your life, but in a new way.

臣民对主权者的义务，只要主权者能保护他们，就持续存在，否则就不再存在。

天地相互配合，才产生了万物；阴阳相互结合，世界才会变化；行为合乎礼仪，天下才能安定。