Who said "I wonder what it would be like to be happy all the time."?

This quote is attributed to Charlie Brown.

I wonder what it would be like to be happy all the time. - Charlie Brown

"I wonder what it would be like to be happy all the time."

Charlie Brown Happiness

"Good grief!"

"I got a rock."

"Rats! I did it again."

"Why is it that everything I do turns into a disaster?"

"Babalú!"

"My greatest joy is making people smile."

"Laughter and love make a home."

"The best things in life are free."