Who said "Gratitude is: thank you, cookie, for exist."?

This quote is attributed to Cookie Monster.

Gratitude is: thank you, cookie, for exist. - Cookie Monster

"Gratitude is: thank you, cookie, for exist."

Cookie Monster Gratitude

"Me love cookie, but me love you more"

"Cookie is a sometimes food"

"Om nom nom nom nom"

"Me not think about tomorrow. Me think about cookie"

"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"