**A individual known for Polygraphiae...**

Gpqg atxr bqocq, ucl tzv rip gkmv iu ydw ynpa nkdk?
Gvxi jamy dj przcl Gagmguon sd droabp, jxughv rge cgvx!
Luvl fycw! 

If too hard, ask for a clue and you will be given.