[87] Even when the extent of the material damage has been established, it will be exceedingly difficult to put a price on it, which must largely depend on the period over which restoration is spread, and the methods adopted. It would be impossible to make the damage good in a year or two at any price, and an attempt to do so at a rate which was excessive in relation to the amount of labor and materials at hand might force prices up to almost any level. We must, I think, assume a cost of labor and materials about equal to that current in the world generally. In point of fact, however, we may safely assume that literal restoration will never be attempted. Indeed, it would be very wasteful to do so. Many of the townships were old and unhealthy, and many of the hamlets miserable. To re-erect the same type of building in the same places would be foolish. As for the land, the wise course may be in some cases to leave long strips of it to Nature for many years to come. An aggregate money sum should be computed as fairly representing the value of the material damage, and France should be left to expend it in the manner she thinks wisest with a view to her economic enrichment as a whole. The first breeze of this controversy has already blown through France. A long and inconclusive debate occupied the Chamber during the spring of 1919, as to whether inhabitants of the devastated area receiving compensation should be compelled to expend it in restoring the identical property, or whether they should be free to use it as they like. There was evidently a great deal to be said on both sides; in the former case there would be much hardship and uncertainty for owners who could not, many of them, expect to recover the effective use of their property perhaps for years to come, and yet would not be free to set themselves up elsewhere; on the other hand, if such persons were allowed to take their compensation and go elsewhere, the countryside of Northern France would never be put right. Nevertheless I believe that the wise course will be to allow great latitude and let economic motives take their own course. [88] _La Richesse de la France devant la Guerre_, published in 1916.