I don't know, Rosehip... I was brought up on secular culture, literature, art, music, and I have always, always found so much beauty there, quite regardless of the religious beliefs of the authors of these beautiful pieces.
Hemingway - a very sad and bitter man, a drunkard, married and divorced several times, changing religion while changing wives, obnoxious, unbearable in his final years (boasting that he will kill himself in such a way that his last wife would have to work very hard to wash the blood off the staircase, which he actually did, eventually...), a total pig, one might say - but has he not glorified God? The power of his writing is, to me, just colossal, overwhelming. As long as I live, I will re-read and re-read and re-read his Nick Adams short stories, his "The Sun Also Rises," "Farewell to the Arms," "For Whom the Bell Tolls," "The Old Man and The Sea..."
Or another favorite of mine, Gabriel Garcia Marquez... He is my most powerful anti-depressant.
Beauty is a complex thing, I guess. Hard to define, hard to confine to some human judgmental moral systems. May be present everywhere though, and I am always looking for it and I always rejoice wherever I find it.
One place I always find it is the Orthodox Divine Liturgy. But I do not find it at all when I am driving and tuning my car radio to one of our local Mississippi "Christian Music" stations. Bland, boring, totally un-beautiful. If the creators and performers of this music think that they glorify God, - so be it, but I just don't want to listen to that...