Friends can come and go, but banners hang forever.
Persistence in research is key; nature reveals its secrets only to those who are patient.
Every time a coal plant closes, a piece of America's heart closes with it.
The poor are often more entrepreneurial than the rich, but they lack the tools to succeed.
The world is a place of the living, and the dead have no place in it. The dead are nothing. They are not even a memory. They are forgotten. And the living, too, will be forgotten.