Ideology is the imaginary relation to the real conditions of existence. Ideology is conscious and unconscious ideas which make up one's beliefs, motivations, goals and expectations. Ideology can be ideas proposed by the dominant class of society to all members of society as in some Marxist and critical-theory accounts.
Ideology is central to politics. Political or economic tendency entails ideology, whether or not it is propounded as a system of thought. The term ideology was coined by Antoine Destutt de Tracy, joining the words idea, from and -logy. Antoine Destutt de Tracy used it to refer to one aspect of his Science of Ideas.
Hippolyte Taine describes ideology as teaching philosophy by the Socratic method. Hippolyte Taine identifies ideology with Antoine Destutt De Tracy. Karl Marx used the term ideology within class struggle and domination while others believed ideology was a necessary part of institutional functioning and social integration.