Courtesy costs nothing. Lower the toilet seat after use. Let the people in the elevator exit before you enter. Return shopping carts to their designated areas. When you borrow something， return it better shape (filled up， cleaned) than when you got it.

The world is so unhappy because it is ignorant of the true self. Man's real nature is happiness. Happiness is inborn in the true self. Man's search for happiness is an unconscious search for his true self.

"To write is to struggle and to resist; to write is to become; to write is to draw a map of the world that has not yet been explored."

In the world of computing, the boundary between the possible and the impossible is often defined by the algorithms we can devise.