Political economy is the science of free society, Fitzhugh says, and socialism is the science of slavery:
[T]he world is divided between two philosophies. The one the philosophy of free trade and universal liberty — the philosophy adapted to promote the interests of the strong, the wealthy and the wise. The other, that of socialism, intended to protect the weak, the poor and the ignorant. The latter is almost universal in free society; the former prevails in the slaveholding States of the South. Thus we see each section cherishing theories at war with existing institutions. The people of the North and of Europe are pro-slavery men in the abstract; those of the South are theoretical abolitionists. This state of opinions is readily accounted for. The people in free society feel the evils of universal liberty and free competition, and desire to get rid of those evils. They propose a remedy, which is in fact slavery; but they are wholly unconscious of what they are doing, because never having lived in the midst of slavery, they know not what slavery is. The citizens of the South, who have seen none of the evils of liberty and competition, but just enough of those agencies to operate as healthful stimulants to energy, enterprise and industry, believe free competition to be an unmixed good.
The South, quiet, contented, satisfied, looks upon all socialists and radical reformers as madmen or knaves. It is as ignorant of free society as that society is of slavery. Each section sees one side of the subject alone; each, therefore, takes partial and erroneous views of it. Social science will never take a step in advance till some Southern slave-holder, competent for the task, devotes a life-time to its study and elucidation; for slavery can only be understood by living in its midst, whilst thousands of books daily exhibit the minutest workings of free society. The knowledge of the numerous theories of radical reform proposed in Europe, and the causes that have led to their promulgation, is of vital importance to us. Yet we turn away from them with disgust, as from something unclean and vicious. We occupy high vantage ground for observing, studying and classifying the various phenomena of society; yet we do not profit by the advantages of our position. We should do so, and indignantly hurl back upon our assailants the charge, that there is something wrong and rotten in our system. From their own mouths we can show free society to be a monstrous abortion, and slavery to be the healthy, beautiful and natural being which they are trying, unconsciously, to adopt.