The word for today is…
ideology (noun):
1a: a manner or the content of thinking characteristic of an individual, group, or culture
b: the integrated assertions, theories and aims that constitute a sociopolitical program
c: a systematic body of concepts especially about human life or culture
2: visionary theorizing
Source : Merriam -Webster
Etymology : Ideology has been in use in English since the end of the 18th century and is one of the few words whose coiner we can identify. The French writer A. L. C. Destutt de Tracy proposed it as a term to designate the “science of ideas,” and in that sense the word was quickly borrowed into English. Though ideology originated as a serious philosophical term, within a few decades it took on connotations of impracticality thanks to Napoleon, who used it in a derisive manner. Today, the word most often refers to “a systematic body of concepts,” especially those of a particular group or political party.
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