Does God exist?

And what we cannot perceive we cannot understand. This is the same as the situation in the story of Flatland. On Flatland, everything exists on a plane. The Lines and Squares and other flat geometrical shapes all live happily on a large plane. They see each other on a two-dimensional scale. One day, the Square family was visited by a great being, a Sphere from Spaceland. The way Sphere appeared caused great confusion. It took a very long time for Sphere to make Square understand. Later, no matter how hard Square tried, no one on Flatland would believe that there is the possibility of more than two-dimensions. It was just out of their capability to understand. .
             This is exactly the same as human perception of God's existence. Human beings think of everything as having a beginning and an end because of their perception of Time- humans tend to extrapolate and generalize base on their experience. If God exists in a different dimension that is out of human conceivability, then God may not be bounded to have a beginning or end because Time may not exist at all in that dimension. So long as God does not exist in the same dimension as ours, the being of God is not bounded by any rules under human perception. .
             I feel that many of the attempts in understanding God show that we, as human beings, has tried too hard and has almost debase God to become human, as if that we thought we can totally comprehend what is in God's minds. This reminds me of Karl Barth's argument that our knowledge of God must come from God by way of revelation, not by way of natural theology- human beings can only make analogies but they can never reach God, because of our analogies may only be our own reflections, the hypostatization of our thoughts and speech. I believe that if God works according to His elaborate planning and flawless designs, then God's nature, His existence, will certainly not be limited to what is familiar to us with our own limited experience in this one small corner of the universe.