The Awareness of the Existence of the Creator: Rambam's First Principle of Emuna - The Creator and The Created:
This principle touches on the idea that we must differentiate between the creator and the created. Everything stems from G-d, the Creator, but not everything is the creator. That means that our ability to understand G-d is limited to that which is reflected in the creation. The oneness of the creator is reflected in the oneness of the created. The oneness of G-d teaches us the potential harmony of all existence.