Our brains are wired to look on the bright side, even when the evidence suggests otherwise.

学习本质上是刺激-反应连接的问题。

俄罗斯法律的严厉性因缺乏强制执行的义务而得到缓和。

The end of history will be a very sad time. The struggle for recognition, the willingness to risk one's life for a purely abstract goal, the worldwide ideological struggle that called forth daring, courage, imagination, and idealism, will be replaced by economic calculation, the endless solving of technical problems, environmental concerns, and the satisfaction of sophisticated consumer demands.

我的人生没有终点，只有音乐。

教师必须具有健康的体魄，农人的身手，科学的头脑，艺术的兴味，改革社会的精神。