In general, the philological movement opened up countless sources relevant to linguistic issues, treating them in quite a different spirit from traditional grammar; for instance, the study of inscriptions and their language. But not yet in the spirit of linguistics.

In fact, from then on scholars engaged in a kind of game of comparing different Indo-European languages with one another, and eventually they could not fail to wonder what exactly these connections showed, and how they should be interpreted in concrete terms.

A language presupposes that all the individual users possess the organs.

The critical principle demanded an examination, for instance, of the contribution of different periods, thus to some extent embarking on historical linguistics.

Linguistics will have to recognise laws operating universally in language, and in a strictly rational manner, separating general phenomena from those restricted to one branch of languages or another.

Language furnishes the best proof that a law accepted by a community is a thing that is tolerated and not a rule to which all freely consent.

Henceforth, language studies were no longer directed merely towards correcting grammar.