 That is how Ramon Llull defines the first principle in his Ars brevis 3–1. The principles are axioms that Ramon Llull will formulate based on the Dignities. He defines them as principles of existence and action (principia existendi et agendi). As principles of existence, they are abstract and allude to the Dignities. As principles of action, they are used to apply the Ars to the knowledge of particular sciences, such as law, navigation, and astrology, among others. The principles can be absolute, if they are taken by themselves, or relative, if they are applied to a particular subject (e.g., Peter is great). Llull explains in Ars Brevis this quality of the principles as