When the green woods laugh with the voice of joy,
And the dimpling stream runs laughing by;
When the air does laugh with our merry wit,
And the green hill laughs with the noise of it. – Lord (George Gordon) Byron

If you are too busy to laugh, you are too busy. – Proverb

The most wasted of all days is that in which we have not laughed. РS̩bastien-Roch Nicolas (Chamfort), translated from French

Not through wrath but through laughter one slayeth. – Friedrich Nietzsche (1844–1900), “Of Reading and Writing,” Thus Spake Zarathus