In alt dar teideal ‘Why do Germans study Celtic Philology?’ a foilsíodh san iris léannta Studiesi Márta na bliana 1930, bhí an méid seo le háiteamh ag anúdar, Rudolf Thurneysen (1857-1940), mar gheall ar an Léann Ceilteach mar dhisciplín acadúil: ‘Among the avenues of approach to Celtic studies I would distinguish three, which may be termed the geographical - ethnological, the linguistic and the literary'.
