The greatest weapon against stress is our ability to choose one thought over another.
The aim of a college education is to teach you to know a good man when you see one.
A great many people think they are thinking when they are merely rearranging their prejudices.
The greatest use of a life is to spend it for something that will outlast it.
The world we see that seems so insane is the result of a belief system that is not working. To perceive the world differently， we must be willing to change our belief system， let the past slip away， expand our sense of now， and dissolve the fear in our minds.
Genius... means little more than the faculty of perceiving in an unhabitual way.
Act as if what you do makes a difference. It does.