The poem is an allusion to the fact that Everyone must die someday.
The poem follows the travels and reflections of a young man who, disillusioned with a life of pleasure and revelry, seeks solace in foreign lands. John Murray published the first two cantos of Childe Harold's Pilgrimage in early March, and Byron "awoke to find himself famous."
"Childe" is a medieval title that denotes a young noble who has not yet been knighted. The line of "A noble man should Be silent, thoughtful, And bold in battle. But every man should also. Be cheerful and happy, Till the inevitable day of death" refers to the phrase that talks about the inevitable end of every human being.
Learn more on Childe Harold's Pilgrimage here: https://brainly.com/question/10240121
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