Who said "Gratitude is for those who can't demand more."?

This quote is attributed to Randall.

Gratitude is for those who can't demand more. - Randall

"Gratitude is for those who can't demand more."

Randall Gratitude

"I'm watching you, Wazowski. Always watching. Always."

"You didn't see me."

"I'm number one. There's no easier way to put it."

"Don't you worry. I have a plan."

"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"