“There is a marvelous medicinal power in joy. Most medicines are distasteful; but this, which is the best of all medicines, is sweet to the taste, and comforting to the heart. This blessed joy is very contagious. One dolorous spirit brings a kind of plague into the house; one person who is wretched seems to stop all the birds from singing wherever he goes . . . [But] the grace of joy is contagious. Holy joy will oil the wheels of your life’s machinery. Holy joy will strengthen you for your daily labor.