一幅画本身必须美丽，而不是因为它代表美丽的事物。
A painting must be beautiful in itself, not because it represents something beautiful.
Do every duty, and expect no reward for it.
我们开采的每一桶石油都必须以最小的环境影响负责任地进行。
Quality is not an act, it is a habit.
你的时间有限，所以不要浪费它去过别人的生活。