《资治通鉴·陈纪·陈纪四》
如果不是以生命来守护，有何面目和这种人在一个天底下生活！ 
不守之以死，何面戴天！ 
If I do not protect the monarch with my life, how can I have the face to live with this kind of person under the same sky! 
<s>[INST] Identify the key themes in this Classical Chinese text and explain them in English: 不守之以死，何面戴天！  [/INST] If I do not protect the monarch with my life, how can I have the face to live with this kind of person under the same sky! </s>
Identify the key themes in this Classical Chinese text and explain them in English: 不守之以死，何面戴天！
user
If I do not protect the monarch with my life, how can I have the face to live with this kind of person under the same sky!
assistant