The two people, with different life philosophy and life beliefs, show it very clearly: the detective Sean is a good person, and he has no bad habits. A thoroughly bad guy, selfish, doesn't care about the feelings of others (of course it doesn't affect him being a good brother).
After the two exchange faces, you can see the different feelings their relatives and friends experience when they go to contact their original relatives and friends again. There is not only discomfort, but also joy.
To be a good person, you must refuse to be stubborn, do not want to live or work, and destroy your love for life. Life itself is not bitter, it is you who infected life with your attitude.
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