 In his Treatise on the union of the intellecting subject and object, Mulla Sadra draws on the Plotiniana and states that the Active Intellect is all things. This follows from his doctrine of the primacy and logical priority of existence. In the Four Journeys, he quotes the following text from the tenth chapter of the Theologia Aristotelis, an extract that exemplifies how the doctrine of the simple reality reconciles monism and pluralism by advocating neither.