Picture yourself given the following question: A woman becomes pregnant. She has tuberculosis and the father has syphilis. As a result she has already had four miscarriages. In fact, their only surviving child is deaf and intellectually impaired. You, as a doctor, are asked to decide whether they should terminate the current pregnancy. Yes, it is (one of the versions of) the Great Beethoven Fallacy. Would you answer “yes” your questioner would triumphantly announce “Congratulations, you have just murdered Beethoven”. Of course the queerness of the argument should be obvious (if not I can readily point them out in a comment), but this is just the introduction to my subject.
This tale, it doesn’t correspond to Beethoven’s real situation by the way, is an example of the Argument from Beauty which tries to affirm the existence of god. The argument is that since beauty transcends an object’s material state, and beauty is a quality of god, then god must exist. And from this there is also an argument that all great art must come from, or be inspired by, religion. But this is of course an incorrect assumption. To see why lets first look at some examples of explicitly religious art and architecture:
Of course these are impressive examples but is it impossible to find something that at least rivals these works? Of course not.
None of these examples have anything to do with religion, yet most would agree they are quite esthetically satisfying.
There are two things one can say about this. The most likely reason artists, architects, musicians and others almost exclusivly created religious art in the past ages were that churches were the only one who could support the creation of such works. God is apparently not a requirement for appreciating the wounderful and spiritual (for lack of a better word). One can also notice the fallacy of defining god as direct responsibility for certain properties in the world. If god is the beauty in a painting, the gentle surface of a lake, and in so many other things, what god is there left to talk about?
Steven Weinberg sums it up perfectly in his Dreams of a Final Theory, “Some people have views of God that are so broad and flexible that it is inevitable that they will find God wherever they look for him. One hears it said that ‘God is the ultimate’ or ‘God is out better nature’ or ‘God is the universe.’ Of course, like any other word, the word ‘God’ can be given any meaning we like. If you want to say ‘God is energy,’ then you can find God in a lump of coal.”