Well, I guess I might go the route that something must be self-sufficient and that the universe is intelligible, so by weak induction we are justified in believing that a self-sufficient being that subsumes a supervening principle of intelligence must be the most basic entity of all, and furthermore, that it pervades all of time and space. (My deity would be inextricably connected to the cosmos).
He who loves God cannot endeavour that God should love him in return - Baruch Spinoza