What Is an Epigram? (Samuel Tayler Coleridge)

Oho! I just posted that other poem/epigram about parsley and now this! If you need a pithy definition of the word, look no farther than this poem by Samuel Taylor Coleridge. 

I look at the poem and want to edit it, however. Since the title is repeated in the poem itself, it seems to not fulfill the given definition of an epigram. It could be made even more brief and still retain the message.

Favorite line: "wit its soul"

wit its soulw