“To laugh continually is to never laugh at all. For it takes the periodic sound of sorrow from which to distinguish the sound of joy.”
“...and I laughed and laughed and laughed until the sound of the sea was drowned.”
“Excessive sorrow laughs. Excessive joy weeps.”
“Pippin glanced in some wonder at the face now close beside his own, for the sound of that laugh had been gay and merry. Yet in the wizard's face he saw at first only lines of care and sorrow; though as he looked more intently he perceived that under all there was a great joy: a fountain of mirth enough to set a kingdom laughing, were it to gush forth.”
“You are not showing her my baby pictures!” He sounded horrified, which made me laugh. “Come on, Evan,” I teased with a laughing smile, “you were adorable.”
“She laughed. I closed my eyes. It sounded damn mournful, that laugh of hers echoing off the square.”