(Quote) Michael Laitman - A Guide to the Hidden Wisdom of Kabbalah

The Kabbalah does not deal with our physical body, but only with our spiritual component. The upper world is like one creature, one soul whose parts are projected to a lower world (the one we perceive) in which we feel ourselves as distinct from each other. To explain this more simply: Because we are limited within our egoism, we feel ourselves as separated from each other, despite the fact that we are all of us actually one spiritual body. Therefore, the separation exists only within our mistaken perception, for we are all in fact one.