Who said "Gratitude is the most exquisite form of courtesy."?

This quote is attributed to Hannibal.

Gratitude is the most exquisite form of courtesy. - Hannibal

"Gratitude is the most exquisite form of courtesy."

Hannibal Gratitude

Military General Carthage 247–183

"I will either find a way, or make one."

"Difficulties strengthen the mind, as labor does the body."

"Where there is a will, there is a way."

"Men are not born cowards or heroes. They are created by circumstances and upbringing."

"Gratitude makes life richer."

"A grateful heart is a happy heart."

"Respect those who came before us."

"Life's greatest treasures are the people we love"