"Don't be angry, uncle. Come! Dine with us tomorrow."
"What right have you to be merry? What reason have you to be merry? You're poor enough."
"Mankind was my business; charity, mercy, forbearance, and benevolence were... my business."
"But you were always a good man of business, Jacob."
"God bless us every one!"
"I'll give you Mr. Scrooge, the Founder of the Feast!"
Scrooge's nephew, Fred, is poor that doesn't stop him from being happy and merry during Christmas or any other time of year. His poorness didn't stop him from falling in love and getting married. He didn't let money not accomplish his goals and his love.
"Our contract is an old one. It was made when we were both poor..."
"You are changed... I release you. With a full heart, for the love of him you once were."
"Even if I have grown so much wiser, what then? I am not changed toward you."
It's likely to be a very cheap funeral, for, upon my life, I don't know anyone to go to it."
Marley was a businessman, a greedy one, and let his greed overtake his business to mankind. This greed for money let Marley suffer for his sins. He is forced to wear chains, because of the sin of greed never let him accomplish anything in what he was supposed to accomplish.
"I thought he'd never die."
"What has he done with his money?"
The Cratchit family has always been poor. They have never let money stop them from accomplishing what they could. They made the most of what they got and were full of cheerful holiday spirit, even though they didn't have much.
"Hear me! I am not the man I was. I will not be the man I must have been..."
"I will honor Christmas in my heart, and try to keep it all year."
"Assure me that I yet may, change these shadows you have shown by an altered life."
Scrooge lost the only person he has ever loved, Belle, to his greed. His greed didn't let Scrooge have any accomplishment. He let the money get to his head, and let his love for money overtake his love for Belle.
Scrooge pushed away everyone who ever cared about him to be alone in solitary with his greed. Pushing away people caused the people of the town to not care about Scrooge in the same way he never cared about anyone himself.
Scrooge realizes that being greedy has caused him misery and pain. He promises to change and be better in the second chance he was given. He is now a changed man and knows that money was becoming his downfall.