Who said "Gratitude is rare in a world of lack."?

This quote is attributed to Droopy.

Gratitude is rare in a world of lack. - Droopy

"Gratitude is rare in a world of lack."

Droopy Gratitude

"I'm so happy."

"Hello, I'm so glad to see you."

"That makes me so sad."

"I'm afraid I have some bad news."

"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"