Luxembourgish language
Eyschen was a great lover of the Luxembourgish language, which was then still regarded as a dialect, and was one of its earliest advocates. In 1903 he had the Dicks-Lentz Monument built, to honour the two national poets of Luxembourg Michel Lentz (1820-1893) and Edmond de la Fontaine (1823-1891), aka "Dicks".