We are here to add to the sum of human goodness. To prove the thing exists. And however futile each individual act of courage or generosity, self-sacrifice or grace-it still proves the thing exists. Each act adds to the fund. It needs replenishment. Not only because evil flourishes, and is, most indefensibly, defended. But because goodness is no longer a respectable aim in life. The hound of hell, envy, has driven it from the house.