Who said "I think it's time we faced reality: I'm a failure."?

This quote is attributed to Charlie Brown.

I think it's time we faced reality: I'm a failure. - Charlie Brown

"I think it's time we faced reality: I'm a failure."

Charlie Brown Truth

"Good grief!"

"I got a rock."

"Rats! I did it again."

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

"Lucy, you got some 'splainin' to do!"

"You must always be honest with the people you love."

"Truth always comes out in the end."

"Honesty is always the best policy."