Man has been naturally so created that it is advantageous for him to be submissive, but disastrous for him to follow his own will, and not the will of his creator.
Saint AugustineDo you wish to rise? Begin by descending. You plan a tower that will pierce the clouds? Lay first the foundation of humility.
Saint AugustineAngels are spirits, but it is not because they are spirits that they are angels. They become angels when they are sent. For the name angel refers to their office, not their nature. You ask the name of this nature, it is spirit; you ask its office, it is that of an Angel, which is a messenger.
Saint Augustine