Be attentive to yourself, that is, observe yourself carefully from every side. Let the eye of your soul be sleepless to guard yourself. You walk in the midst of snares. Hidden traps have been set by the enemy in many places. Therefore, observe everything, "that you may be saved like a gazelle from traps and like a bird from snares" (Proverbs 6:5). - St. Basil of Caesarea, On the Human Condition