Who after all, is a poet? A person whose brain has developed special skills with the language and its beauty in expression. Unlike the writer, he has feelings to convey through words more than a story. Same can be said of the musician, the painter and just about anyone involved in the pampering and enrichment of the finer senses of the brain in perception of feelings, thoughts and aspirations.
Unlike what most people think, poets (and other such artists) are just people who have a 'license' stamped on them by the society to behave and act in a more liberal fashion than the society as a whole. But they are all humans. The percentage of rogues, blackguards and knaves among artists is just the same as in every other vocation.
Those who become 'great' sometimes redeem themselves and act in a manner more befitting to the general perception of kindness etc etc. Remember that poets like Byron (a real rogue) and musicians like Wager were nothing but devils in disguise sometimes.
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Poets, like any other artist are to an extend kind. But whether they are liberal minded or not depend on the personlity. While Oliver Goldsmith is very very kind hearted( Who could forget his ' The man in black) and liberal minded, the same can not be said of Lord Tenneyson and Byron, going through their personal life. But in general most of the great artists including poets are weak in moral character and vices like drugs and liquor. Those who are/were perfect in moral values seldom gave poems of outstanding characters. In the recent times great poets like Kannadasan(Tamil), Vayalar Rama Varma(Malayalam) are moral wreaks but great geniuses .