It is a fair, even-handed, noble adjustment of things, that while there is infection in disease and sorrow, there is nothing in the world so irresistibly contagious as laughter and good-humour.

这世界有一种公平、公正而高尚的安排：疾病和悲伤虽然会传染，但没有什么能像欢笑与好心情那样，具有令人无法抗拒的感染力。