相对论不仅仅是一种科学理论；它是一种哲学理论。

Never compromise on quality—your brand is only as strong as your weakest product.

Patience is the key to achieving great endeavors.

【讲解】：有志之士和仁人，不会贪生怕死而损害仁，只会勇于牺牲来成全仁。