translation.en: Cognition is about understanding the world, emotion is about interpreting it -- saying good, bad, safe, dangerous, and getting us ready to act, which is why the muscles tense or relax.
translation.zh: 认知之意义在于理解世界 而情感则试图解释这个世界 善良与邪恶 安全与危险 都是通过情感判断出来的 有了判断我们才会行动 肌肉之活动也与此相关