The Polish language acquired during this period such a degree of refinement, that even on the revival of literature and taste in modern times, it was necessary to add nothing for its improvement; although the course of time naturally had occasioned some changes. Several able men occupied themselves with its systematic culture by means of grammars and dictionaries. Zaborowski, Statorius, and Januscowski wrote grammars; Macynski compiled the first dictionary. The first part of Knapski's _Thesaurus_, an esteemed work even at the present day, was first published in 1621, and may therefore be considered as a production of this period. But the practical use, which so many gifted writers made of the language for a variety of subjects, contributed still more to its cultivation. The point in which it acquired less perfection, and which appeared the most difficult to subject to fixed rules, was that of orthography. That the Latin alphabet is not fully adapted to express Slavic sounds, is evident in the Polish language. Indeed the reputed harshness of this language rests partly on the manner in which they were obliged to combine several consonants, which to the eye of the occidental European can only be united by intermediate vowels. On the other hand, it is just this system of letters which forms a connecting link between the Polish language and those of western Europe; and although most Slavic philologists regret that the Latin alphabet ever should have been adopted for any Slavic language in preference to the Cyrillic, yet Grimm (with whom we fully agree) thinks that "the adoption of the former, with appropriate additions corresponding to the peculiar sounds of each language and dialect, would have been beneficial to all European languages."[20]