Henosis, or primordial unity, is rational and deterministic, emanating from indeterminism an uncaused cause. Causal determinists believe that there is nothing uncaused or self-caused. Universal principle, or "Purusha", is that which is unchanging (aksara) and is uncaused. Locke accepted the existence of God as the uncaused Necessary Being, eternal, and all-knowing. Such an uncaused, self-sustaining reality he called "substance". There are no causes in the world that are, themselves, free and uncaused. In the series of causes in the world, there is not a necessary, uncaused being. The action was not uncaused, because the agent caused it.