Gluttony makes a man gloomy and fearful, but fasting makes him joyful and courageous.
And, as gluttony calls forth greater and greater gluttony, so fasting stimulates greater and greater endurance.
When a man realizes the grace that comes through fasting, he desires to fast more and more.
And the graces that come through fasting are countless....
~Saint Nikolai of Zicha~