  If “being itself” (ipsum esse) distinguishes the being (esse) of a creature from its independent existence (existere), adding the superlative completely pure to being itself (esse purissimum) refers to the notion of an essence that does not involve non-being in any way: a completely pure or perfect essence. The notion of esse purissimum does not presuppose the real existence of God; rather, it implies that real existence. But at this point this inference may not yet be clear, so Bonaventure devotes the rest of this short text to showing why the notion of completely pure being itself actually entails the real existence of God.