The improvement of the productive powers of labor, and the greater part of the skill, dexterity, and judgement with which it is anywhere directed or applied, seem to have been the effects of division of labor.

When I approach a child, he inspires in me two sentiments; tenderness for what he is, and respect for what he may become.

编程与Like子一样，是一种文字游戏。

社交媒体最棒的部分是看到音乐如何将世界各地的人们聚集在一起。

我不是榜样，我只是一个成功的人。

自动控制的艺术在于正确调整修正力。