‘Know thyself’: this is true humility, the humility that teaches us to be inwardly humble and makes our heart contrite. Such humility you must cultivate and guard. For if you do not yet know yourself you cannot know what humility is, and have not yet embarked truly on the task of cultivating and guarding. To know oneself is the goal of the practice of the virtues.
– Nikitas Stithatos, On The Inner Nature of Things