Who said "Why do we have to have wars? Why can't we all just get along?"?

This quote is attributed to Charlie Brown.

Why do we have to have wars? Why can't we all just get along... - Charlie Brown

"Why do we have to have wars? Why can't we all just get along?"

Charlie Brown Peace

"Good grief!"

"I got a rock."

"Rats! I did it again."

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

"Peace comes from a good conscience."

"Life is too short to hold grudges."

"A man's home is his sanctuary. It should be treated as such."

"The world is chaotic enough. At least your home should make sense."