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.

Freedom is never voluntarily given by the oppressor； it must be demanded by the oppressed.

自由民主的力量在于其适应和改革自身的能力。

Life is like a piano. The white keys represent happiness and the black keys show sadness. But as you go through life's journey, remember that the black keys also create music.