John the Beloved, the closest disciple of Christ, said it well: "No man hath seen God at any time".
Anything we can say about the nature of God (or the reality of and behind all existence and beyond), would ultimately be a lie. Even the principle of reflection has very limited voice there. We hinted at this in the chapter 'Mountain' of our book 'The God Principle'.
From this perspective it matters little whether one is an atheist, theist, agnostic, or any combination of such whatsoever. All of these perspectives are equally valid or invalid as one may choose. Only Love endures, as man's closest approach to that reality.