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.
Mental phenomena can only be understood in terms of their consequences for action.
The writer’s life is a life of solitude.
學(xué)習(xí)是避免陷入人生困境的唯一途徑。
每一本書都是一次旅程，每一次旅程都是一本書。