I do, I must, Scrooge replies, but why do spirits walk the earth and why do they come to me?
Marley's Ghost answers him: It is required of every man that the spirit within him should walk abroad among his fellow men, and travel far and wide; and if that spirit goes not forth in life, it is condemned to do so after death. It is doomed to wander through the world and witness what it cannot share but might have shared on earth and turned to happiness!
But you were always a good man of business, falters Scrooge, trying to console the Ghost.
Business! cries Marley's Ghost, wringing its hands. " Mankind was my business. The common welfare was my business; charity, mercy, forbearance, and benevolence were all my business. The dealings of my trade were but a drop in the water of the great ocean of my business."
~ Charles Dickens