Who said "Your pain makes you human - don't hide it."?

This quote is attributed to Kenny McCormick.

Your pain makes you human - don't hide it. - Kenny McCormick

"Your pain makes you human - don't hide it."

Kenny McCormick Truth

"Mmph mmph mrmph!"

"I'm not fat, I'm just big boned"

"Dude, we're in third grade"

"This is so cool"

"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."