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. When Scrooge's nephew laughed in this way: holding his sides, rolling his head, and twisting his face into the most extravagant contortions: Scrooge's niece, by marriage, laughed as heartily as he. And their assembled friends being not a bit behindhand, roared out lustily.