Oh dear WYSIWYG, please try and distinguish between things and theories about things. Gravity and Thought and the Earth, Sun and Moon and Love and Bacon Sandwiches and the Colour Purple simply exist. They ARE regardless of science or religion. It is only theories about them that need to be proved.

Just because I can't see a Bacon Sandwich at the moment doesn't mean I can't prove they exist. Now I think about it.....