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Etymology and history

The term ideology originates from French idéologie, itself deriving from combining Greek: idéā (ἰδέα, ' notion, pattern '; close to the Lockean sense of idea) and -logíā (-λογῐ́ᾱ, ' the study of '). The term ideology and the system of ideas associated with it was coined in 1796 by Antoine Destutt de Tracy while in prison pending trial during the Reign of Terror, where he read the works of Locke and Étienne Bonnot de Condillac.

Hoping to form a secure foundation for the moral and political sciences, Tracy devised the term for a "science of ideas", basing such upon two things: (1) the sensations that people experience as they interact with the material world; and (2) the ideas that form in their minds due to those sensations. Tracy conceived ideology as a liberal philosophy that would defend individual liberty, property, free markets, and constitutional limits on state power. He argues that, among these aspects, ideology is the most generic term because the 'science of ideas' also contains the study of their expression and deduction. The coup d'état that overthrew Maximilien Robespierre allowed Tracy to pursue his work. Tracy reacted to the terroristic phase of the revolution (during the Napoleonic regime as part of the Napoleonic Wars) by trying to work out a rational system of ideas to oppose the irrational mob impulses that had nearly destroyed him.

A subsequent early source for the near-original meaning of ideology is Hippolyte Taine 's work on the Ancien Régime, Origins of Contemporary France I. He describes ideology as rather like teaching philosophy via the Socratic method, though without extending the vocabulary beyond what the general reader already possessed, and without the examples from observation that practical science would require. Taine identifies it not just with Tracy but also with his milieu, and includes Condillac as one of its precursors. Napoleon Bonaparte came to view ideology as a term of abuse, which he often hurled against his liberal foes in Tracy's Institut national. According to Karl Mannheim 's historical reconstruction of the shifts in the meaning of ideology, the modern meaning of the word was born when Napoleon used it to describe his opponents as "the ideologues". Tracy's major book, The Elements of Ideology, was soon translated into the major languages of Europe.

In the century following Tracy, the term ideology moved back and forth between positive and negative connotations. During this next generation, when post-Napoleonic governments adopted a reactionary stance, influenced the Italian, Spanish and Russian thinkers who had begun to describe themselves as liberals and who attempted to reignite revolutionary activity in the early 1820s, including the Carbonari societies in France and Italy and the Decembrists in Russia. Karl Marx adopted Napoleon's negative sense of the term, using it in his writings, in which he once described Tracy as a fischblütige Bourgeoisdoktrinär (a "fish-blooded bourgeois doctrinaire"). The term has since dropped some of its pejorative sting (euphemism treadmill), and has become a neutral term in the analysis of differing political opinions and views of social groups. While Marx situated the term within class struggle and domination, others believed it was a necessary part of institutional functioning and social integration.