“As soon as you have made a thought, laugh at it.”

Lao Tsu

"The human race has only one really effective weapon, and that's laughter. The moment it arises, all our hardnesses yield, all our irritations and resentments slip away, and a sunny spirit takes their place."

Mark Twain

"Si alguien está tan cansado que no pueda darte una sonrisa, dale la tuya." Proverbio chino  
"If someone is too tired to give you a smile, give them yours." Chinese proverb