And to the degree to which we attempt violently to re-direct the economic currents, does the security upon which our credit depends decline.[134] There are other considerations. A French journalist asks plaintively: 'If we want the coal why don't we go in and take it'--by the occupation of the Ruhr. The implication is that France could get the coal for nothing. Well, France has taken over the Saar Valley. By no means does she get the coal for nothing. The miners have to be paid. France tried paying them at an especially low rate. The production fell off; the miners were discontented and underfed. They had to be paid more. Even so the Saar has been 'very restless' under French control, and the last word, as we know, will rest with the men. Miners who feel they are working for the enemy of their fatherland are not going to give a high production. It is a long exploded illusion that slave labour--labour under physical compulsion--is a productive form of labour. Its output invariably is small. So assuredly France does not get this coal for nothing. And from the difference between the price which it costs her as owner of the mines and administrator of their workers, and that which she would pay if she had to buy the coal from the original owners and administrators (if there is a difference on the credit side at all) has to be deducted the ultimate cost of defence and of the political complications that that has involved. Precise figures are obviously not available; but it is equally obvious that the profit of seizure is microscopic. Always does the fundamental dilemma remain. France will need above all, if she is to profit by these raw materials of European industry, markets, and again markets. But markets mean that the iron which has been captured must be returned to the nation from which it was taken, on conditions economically advantageous to that nation. A central Europe that is consuming large quantities of metallurgical products is a Central Europe growing in wealth and power and potentially dangerous unless reconciled. And reconciliation will include economic justice, access to the very 'property' that has been seized. The foregoing is not now, as it was when the present author wrote in similar terms a decade since, mere speculation or hypothesis. Our present difficulties with reference to the indemnity or reparations, the fall in the exchanges, or the supply of coal, are precisely of the order just indicated. The conqueror is caught in the grip of just those difficulties in turning conquest to economic account upon which _The Great Illusion_ so repeatedly insisted.