The difference between the extremely happy people and extremely unhappy people is not that one gets sad, of upset, or anxious, or depressed; and the other does not.

极其快乐的人和极其不快乐的人,区别不是在于一个会伤心，难过，焦虑或抑郁;,而另一个不会。

哈佛公开课 - 幸福课课程节选

Those who profess to love the Union are not so anxious to preserve slavery, while those who are opposed to the war acknowledge in all their actions that its continuance will put an end to this accursed system.

那些宣称热爱联邦的人,并不急着想保存奴隶制,同时那些反战的人,他们以行动昭告天下,战争会持续到这种被人唾骂的制度结束

耶鲁公开课 - 美国内战与重建课程节选