It's hard to overstate just how huge Don Juan is in the canon of world literature. The famous poet Goethe wrote that Don Juan was "a work of boundless genius" and critics have tended to agree ever since. You'll be hard-pressed to find a major anthology of British poetry that doesn't have at least an excerpt of Don Juan in it. This is due to the fact that Byron is both a great rhymester and unique for his time when it comes to humor. Byron was writing during an era when other poets wanted to talk about taking nature walks and the horrors of industrial society. But Byron just wanted everyone to pop a chill pill and stop taking themselves too seriously.
Here's the thing about satire, though: it's not good enough to point at a person in authority and say, "You're a poopy head." You have to be clever about it if you want to be effective. You have to show people that you have the skill to be good at whatever you want, but you just choose to use it for mockery. That's what made Byron's satire so effective. He basically told his audience: "Here's some of the best poetry you've ever seen, and I'm going to use it to take you down a peg."
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