"Most important, perhaps, after Gothic was the discovery in Exeter College library, when I was supposed to be reading for Honour Mods, of a Finnish Grammar. It was like discovering a complete wine-filled cellar filled with bottles of an amazing wine of a kind and flavor never tasted before. It quite intoxicated me; and I gave up the attempt to invent an 'unrecorded' Germanic language, and my 'own language' – or series of invented languages – became heavily Finnicized in phonetic pattern and structure. That is of course long past now."
January 1, 1970
https://en.wikiquote.org/wiki/J._R._R._Tolkien