The history of Kabbalah corresponds to the history of creation. The Thought of Creation caused creation to happen. The Thought of Creation is called the Root Phase or Phase Zero. Phase Zero generated four more phases, which then generated a Root World, which is still a spiritual world, not a physical one. The Root World, called Adam Kadmon (The Primeval Man), generated four more worlds, called Atzilut, Beria, Yetzira, and Assiya. Those, too, are spiritual worlds, not physical ones...