Consciousness is the fourth dimension. The reason why we will never find the fourth dimension is because it is the realm of abstraction in our minds. It is a mistake to look at the finger pointing at the moon. The fourth dimension is chasing its own tail. We may inhabit the third dimension, but we are fourth dimensional beings. The spirit of God lives in us. If you are well read enough, you will see how this simple realisation ties Taoism, Gnosticism, Buddhism and many more esoteric traditions together (as well as modern physics).