Quixotism (/kwɪkˈsɒtɪzəm/ or /kiːˈhoʊtɪzəm/) is impracticality in pursuit of ideals, especially those ideals manifested by rash, lofty and romantic ideas or extravagantly chivalrous action. It also serves to describe an idealism without regard to practicality. An impulsive person or act might be regarded as quixotic.
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... Quixotism as a term or a quality appeared after the publication of El ingenioso hidalgo don Quijote de la Mancha in 1605 ... the Wind-mills of their owne Heads" The word Quixotism is mentioned, for the first time, in Pulpit Popery, True Popery (1688) "All the Heroical Fictions of Ecclesiastical ...