“No principle in the world is always right, and no thing is always wrong. What was used yesterday may be rejected today, what is rejected now may be used later on. This use or disuse has no fixed right or wrong. To avail yourself of opportunities at just the right time, responding to events without being set in your ways, is in the domain of wisdom. If your wisdom is insufficient, even if you are as learned as Confucius and as skilled as Lu Shang, you’ll come to an impasse wherever you go.”
