The Word of the Day comes from David Mitchell's masterpiece "CLOUD ATLAS", which Nat and I have just about finished.
QUIXOTISM
Quixotism 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.