Who said "Gratitude is the first step toward loyalty."?

This quote is attributed to Team Rocket.

Gratitude is the first step toward loyalty. - Team Rocket

"Gratitude is the first step toward loyalty."

Team Rocket Gratitude

"Prepare for trouble, and make it double!"

"To protect the world from devastation!"

"To unite all peoples within our nation!"

"To denounce the evils of truth and love!"

"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"