The propensity to truck， barter， and exchange one thing for another is common to all men， and to be found in no other race of animals.

Every molecule tells a story, and catalysts help us write new chapters.

Happiness is not something ready made. It comes from your own actions.

To be a nurse is to walk with people through some of the most vulnerable times of their lives.

The path to economic justice begins with recognizing the full humanity of every individual.

文学是被边缘者的声音。