"There are four qualities which characterize a friend: Loyalty, right intention, discretion, and patience. Right intention seeks for nothing other than God and natural good. Discretion brings understanding of what is done on a friend’s behalf, and ability to know when to correct faults. Patience enables one to be justly rebuked, or to bear adversity on another’s behalf. Loyalty guards and protects friendship, in good or bitter times."
Thanks to Integrity for the Aelred icon image.