Quixotism n. : That form of delusion which leads to extravagant and absurd undertakings or sacrifices in obedience to a morbidly romantic ideal of duty or honor, as illustrated by the exploits of Don Quixote in knight-errantry.

Example:
Did the Second Great Awakening alleviate the repudiation of Deism through religious fervor and Quixotism?

Taxonomy
Quixotism, idealism, free encyclopedia, ideals, Quixote, Popery, Origin, search, kwik, sä, tism, impracticality, pursuit, rash, romantic ideas, regard to, consequence, absurdity.

Defination from the web:
Quixotism is usually related to "over-idealism", meaning an idealism that doesn't take consequence or absurdity into account. ... Quixotism as a term or a quality appeared after the publication of El ingenioso hidalgo don Quixote de la Mancha in 1605. ...