Talk:Van Loon's law

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I think this could be the original quote that was paraphrased.

"One of the reasons why the Greeks and Romans, who were quite as intelligent as we are, failed to devise more interesting machinery, was to be found in the widespread existence of slavery."

--Hendrik Willem Van Loon, The Story of Mankind, p403, The Age of the Engine^[1]

^ https://books.google.com/books?id=jaY-AAAAYAAJ&printsec=frontcover&dq=hendrik+willem+van+loon&hl=en&sa=X&ved=0ahUKEwiPwrD1lsLiAhWPup4KHWj2BHoQ6AEILDAB#v=snippet&q=%22One%20of%20the%20reasons%20why%20the%20Greeks%22&f=false

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[1] ttps://books.google.com/books?id=jaY-AAAAYAAJ&printsec=frontcover&dq=hendrik+willem+van+loon&hl=en&sa=X&ved=0ahUKEwiPwrD1lsLiAhWPup4KHWj2BHoQ6AEILDAB#v=snippet&q=%22One%20of%20the%20reasons%20why%20the%20Greeks%22&f=false

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