He was now “convinced that the substitution of machines for human labor is often very injurious to the class of laborers,” that the “same cause which may increase the net revenue of the country, may at the same time render the population redundant.” As a result, “the opinion entertained by the laboring class, that the employment of machinery is frequently detrimental to their interests, is not founded on prejudice and error, but is conformable to the correct principles of political economy.”