This article presents the outcome of my previous deliberations concerning texts on acts of law and languages for special purposes connected with them. The fundamental purpose of this article is to underline the fact that it is very urgent to create a special subfi eld of linguistics which should concentrate on systematic analysis of the texts of acts of law. I suggest that this subfield of linguistics be called "legislative linguistics". Its aim is, fi rst of all, to perform the systematic reconstruction of languages for special purposes in which texts of acts of law were composed. Furthermore, this fi eld of study would deal with developing criteria for linguistic evaluation as well as ways of rationally improving both these languages and their practical use, i.e. among others, with the skill of properly formulating given texts of acts of law "with the help of" appropriate languages for special purposes. This task needs to be carried out as soon as possible due to the absolutely horrifying quality of the texts of acts of law, and the languages in which they were composed. Moreover, due to the fact that linguistics, especially so-called text linguistics, may contribute to the significant improvement of the quality of such texts, on condition that when analyzing them, it will take into account everything that representatives of anthropocentric linguistics know already about texts and actual languages for special purposes, and not only what their authors and/or representatives of traditional linguistics know about them.