For the German Enlightenment period in the second half of the 18th century, the concept Sprache (Language)
is one of the most enduring constants. The works by G. W. Leibniz on the idealized language, Chr. von
Wolff on the innovative language for the science, J. Chr. Adelung on the anthropological nature of language
forms the basis for the vocabulary of the humanities. Adelung wrote more than 40 major works on lexicology,
grammar, spelling, comparative linguistics, textbooks for schools. These works contribute to the becoming of
the philological German tradition and formation of the language for the humanities.