该句使用should结构表达强烈建议，语气规范且完整。
Actions that benefit both oneself and others should always be done; actions that harm oneself but benefit others should be carefully considered; actions that harm others without benefiting oneself should never be done.
Those with strong faith can turn life into a colorful stage, while pessimists only leave marks of lifelong burden in their minds.
If you repeat to yourself every day, "I don’t need to worry about such small matters," you will discover an incredible inner strength. It is worth trying.
Only the weak seek sympathy, while the truly strong earn respect even in adversity, because they understand self-respect, independence, and self-improvement.
Politeness is like a cushion—though it may be empty inside, it effectively reduces bumps and friction between people.
The misfortune of geniuses adds brilliance to their talent, while the good fortune of ordinary people often deepens their mediocrity.
有利己利人的事情，一定要去做；损己利人的事情，需要谨慎考虑是否去做；损人不利己的事情，则一定不要做。
拥有信念的人会将生活演绎成多姿多彩的舞台，而悲观的人只会在心里留下终身受累的印记。
如果你能每天对自己说几遍“我不必为这点小事烦恼”，你会发现内心会产生一种不可思议的力量，这个方法值得一试。
只有弱者才需要同情，而真正的强者即使命运多舛，也依然会赢得尊敬，因为他们懂得自尊、自立与自强。
礼貌就像一个气垫，虽然里面可能空无一物，但却能有效减少人与人之间的碰撞与摩擦。
天才的不幸会增添其光芒，而庸人的好运则只会加深其平庸的厚度。