“it's not my business," Scrooge returned. "It's enough for a man to understand his own business, and not to interfere with other people's. Mine occupies me constantly.”
“But you were always a good man of business, Jacob,' faltered Scrooge, who now began to apply this to himself.Business!' cried the Ghost, wringing its hands again. "Mankind was my business; charity, mercy, forbearance, and benevolence, were, all, my business. The deals of my trade were but a drop of water in the comprehensive ocean of my business!”
“A man is likely to mind his own business when it is worth minding. When it is not, he takes his mind off his own meaningless affairs by minding other people's business.”
“My own business always bores me to death; I prefer other people's.”
“Business? It's quite simple. It's other people's money.”
“It's none of his business.""You are my business. I made you my business. I want you to be my business.”