Intellectual
An intellectual is a person who engages in critical study, thought, and reflection about the reality of society, and proposes solutions for the normative problems of that society, and, by such discourse in the public sphere, he or she gains authority within the public opinion. Coming from the world of culture, either as a creator or as a mediator, the intellectual participates in politics, either to defend a concrete proposition or to denounce an injustice, usually by producing or by extending an ideology, and by defending a system of values.
Socially, intellectuals constitute the intelligentsia, a status class organised either by ideology (conservative, fascist, socialist, liberal, reactionary, revolutionary, democratic, communist intellectuals, et al.) or nationality (American intellectuals, French intellectuals, Ibero–American intellectuals, et al.). The contemporary intellectual class originated from the intelligentsiya of Tsarist Russia (ca. 1860s–70s), the social stratum of those possessing intellectual formation (schooling, education, Enlightenment), and who were Russian society's counterpart to the German Bildungsbürgertum and to the French bourgeoisie éclairée, the enlightened middle classes of those realms.