Who said "I like to think that my life has been an open book."?

This quote is attributed to Charlie Brown.

I like to think that my life has been an open book. - Charlie Brown

"I like to think that my life has been an open book."

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."