1. They who can laugh at themselves are always amused. This sentence is an inverted sentence with the predicate placed before the subject; it also contains a relative clause or a nominative clause following "for." The original meaning is preserved, but the sentence structure is improved for clarity.2. Or, it could be rephrased as: "They are pleased who can laugh at themselves, for they shall never cease to be amused." This alternative sentence maintains the original meaning while using a more conventional sentence structure.3. The phrase "laugh at" means to find something funny, to mock, or to be indifferent towards. The phrase "cease to do something" implies a natural or sudden stopping of an action. When combined with the negative adverb "never," it means to never stop doing something.4. The phrase "be pleased for" means to be happy or satisfied because of something. The revised sentence conveys that those who can joke about themselves are satisfied because they are consistently entertaining and amusing to others.In summary, the original text suggests that people who can mock themselves are consistently amused. By revising the sentence, we enhance its structure and clarify the message without altering the original intent.