Scriptural Verse: Proverbs 28:7
He who keeps the law is a discerning son, but he who is a companion of gluttons humiliates his father.

Eating is gluttonous when one knowingly exceeds his measure and capacity from desire for pleasure. Aquinas teaches that behind this vice is the desire for pleasure. Gregory the Great says “because in eating, pleasure is blended with necessity, we fail to discern what necessity itself demands and what pleasure secretly demands. St Augustine said “where nature and necessity are in control there is no culpability. The most difficult desire to regulate is that for pleasure, especially natural and necessary pleasures associated with our daily drink and food. When eating exceeds the rule of reason it becomes a vice.