It seems to me that if you or I must choose between two courses of thought or action, we should remember our dying and try so to live that our death brings no pleasure to the world.
教学是我最伟大的艺术作品。
If you borrow something, try to return it in better shape than you received it. Clean it, sharpen it, fill it up.
逆向思考往往能带来意想不到的好处。