Happiness is not something ready made. It comes from your own actions.
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.
La poesía es la única prueba concreta de la existencia del hombre.
你给予的越多，他们索取的越多。
Simplicity can be the most powerful thing.