Who said socialism works until you run out of other people's money?

Margaret Thatcher, in a television interview for Thames TV This Week on February 5, 1976. Prime Minister Thatcher said, "...and Socialist governments traditionally do make a financial mess. They [socialists] always run out of other people's money. It's quite a characteristic of them." It has been popularly paraphrased in various forms: * "The problem with socialism is that eventually you run out of other people's money [to spend]." * "The trouble with socialism is that eventually you run out of other people's money." * "Eventually, socialists run out of other peoples' money [to spend]."