quixote

noun

1. One resembling Don Quixote; someone who is chivalrous but idealist.

   “I had once determined to fix the terrible Name of some Man of War in the Front of your History, a perfect Hero, that should like another Quixot defend your Reputation right, or wrong [...].”

   “Few things can more inflame / This far too combative heart / Than the intellectual Quixotes of the age / Prattling of abstract art.”

   “But he was also a natural chronicler: one senses that, even as his schemes collapsed, this aesthetic Arab Quixote knew the stories would make great material for his witty, sharp, melancholic writings.”