I love the dialogue before you fight Kefka as a last boss, but once you reach him as the final boss (angel-style), I find his words great but lacking. Anyone else? He starts some great philosophical questions (FF6 is very philosophical) such as "Hope...Dreams...Where did they come from? Where are they headed?" then jumps immediately to "These things, I am going to destroy!" I think that conclusion is a bit rushed, because Kefka is great as a villain of pure evil, but I think he could be the best villain if he had some psychotic reasoning for why he should destroy everything.
So of course, I go straight to looking up Neitzsche quotes. If I could come up with a short assertion on why "evil" is in fact best or "good," then I think it would elevate Kefka to being an even better contender for best villain ever.

Other inspiration could possibly come from The Joker a la Dark Knight, because he challenges heroism well, but unfortunately I don't remember him providing any great religion towards evildoing.
What do you guys think, is this worthwhile or blasphemy?
Alternatively, some quick additions to Atma's dialogue would also be interesting, because he almost has a specific role as an evil-doer-by-fate, allowing for some "You heroes are drops in the currents of time" belittling of heroism.