Who said "Elmo thinks everybody can be smart if they try hard."?

This quote is attributed to Elmo.

Elmo thinks everybody can be smart if they try hard. - Elmo

"Elmo thinks everybody can be smart if they try hard."

Elmo Education

"Elmo loves goldfish! Goldfish is Elmo's friend."

"Elmo is happy! Elmo loves being happy!"

"Elmo believes in you! You can do anything!"

"Elmo's world is a happy place where friends play together."

"Education opens doors."

"Education opens doors to endless possibilities."

"I ain't got the education you got, bub."

"You can't put a price on history."