Who said "Laughter is the best sound in the whole world"?

This quote is attributed to Big Bird.

Laughter is the best sound in the whole world - Big Bird

"Laughter is the best sound in the whole world"

Big Bird Humor

"I'm very big, but I'm still learning something new every day."

"Being different is what makes you special."

"I like to help my friends, even when it's hard."

"Every day is a chance to be better than yesterday."

"Never underestimate the power of a good laugh."

"Laughter is the best medicine."

"A good laugh is the best medicine."

"Laughter is contagious and wonderful."