… is from chapter 1 of William Graham Sumner’s great 1885 book, Protectionism: the -ism Which Teaches that Waste Makes Wealth;
Protectionism bars the science of political economy with a dogma, and the only process of the art of statesmanship to which it leads is eternal trial and failure—the process of the alchemist and of the inventor of perpetual motion.


Protectionism bars the science of political economy with a dogma, and the only process of the art of statesmanship to which it leads is eternal trial and failure—the process of the alchemist and of the inventor of perpetual motion.
