Vestigia Trinitatas was developed by Augustine and holds that there are signs of the Trinity in all of creation. These signs are not illustrations for the Trinity but rather an imprint of the Trinity made during creation. The common Augustinian example was the mind. The concept of vestigia trinitatas continued in its development during the Medieval time period by theologians such as St. Francis Bonaventure. Bonaventure taught that there was a difference between the vestiges and the likeness and image of the Trinity.