universal language

...Rather than being a special means of communication like cryptography, it was a kind of cultural reform that was deeply connected to methods of thought and the pursuit of truth, and its creation began in earnest in 17th century Europe. The background to the attention given to artificial languages ​​during this period was (1) the need for a "universal language" to replace Latin, which could no longer survive as a common language due to conflicts between countries over politics and religion, and (2) the autistic state of European culture in general, which led to calls for the establishment of a logical and precise "philosophical language" that could contribute to the development of philosophy and science, instead of natural languages, which could not completely eliminate ambiguity and illogicality.
[history]
In 1629, Descartes, Mersenne and others, who aimed to innovate and revitalize knowledge through international academic exchange, criticized existing languages, in which the connections between symbols, sounds and meanings were extremely arbitrary, and proposed the creation of a philosophical language that could express concepts as precisely as numbers.

*Some explanations of terms that mention "universal language" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…暗号術のような特殊な通信手段というよりも，思想や真理探究の方法にまで深くかかわった一種の文化改革であり，17世紀ヨーロッパにおいて本格的にその創造が開始された。この時期に人工言語が注目を浴びた背景には，(1)政治･宗教を巡る各国の抗争により，共通語として存続しえなくなったラテン語に代わる〈国際語universal language〉の必要性と，(2)あいまい性や非論理性を一掃しえない自然言語に代わり，哲学や科学の発展に寄与しうる論理的で精密な〈哲学的言語philosophical language〉の確立が叫ばれるに至った，ヨーロッパ文化全般の自閉的状況がある。
［歴史］
　1629年，学問の国際交流により知の革新と活性化をめざしたデカルト，メルセンヌらは，記号･音韻･意味の結び付きがきわめて恣意的である既成言語を批判し，数字のように精密に概念を表現できる哲学的言語の創出を提案した。…

※「universal language」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典 第２版について | 情報