科学的进步在于每一步发现一种新的秩序，这种秩序将看似不同的事物统一起来。
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.
I just want to make people happy.
Welcome, O life! I go to encounter for the millionth time the reality of experience and to forge in the smithy of my soul the uncreated conscience of my race.
Quality is not an act, it is a habit.