And in order that the knowledge thus made common to everyone may be actually and profitably made use of by everyone--which is possible only when everyone is placed in a position to apply his capabilities to those among the branches of labour in which he is skilled, and which for the time being yield the highest revenue--provision must be made that everyone shall always be able to obtain possession of the requisite means of production. Of these means of production there are two classes--the powers of nature and capital. Without these means of production, the most exact information as to which are the branches of labour whose products are in greatest demand, and which, therefore, yield the highest profits, would be of as little use as the most perfect skill in such branches of production. A man can utilise his power to labour only when he has command both of the materials and forces supplied by nature, and of the appropriate instruments and machines; and if he is to compete with his fellow-workers he must possess both classes of the means of production as fully and as completely as they. In order to grow wheat, a man must not only have land at his command, but he must have land that is equally good for growing wheat as is the land of the other wheat-growers, otherwise he will labour with less profit and possibly with actual loss. And possession of the most fertile land will not make the work possible, or at any rate equally profitable, unless the worker possesses the requisite agricultural implements, or if he possesses them in a less degree than his competitors. Then as to capital: the Free Society undertook to place it at the disposal of everyone who wished for it, and that without interest, on condition that it was reimbursed out of the proceeds of production within a period the length of which was to be determined by the nature of the proposed investment. As the instruments of labour and the other capitalistic aids to labour could be provided to any amount and of any quality, one part of the problem was thereby solved. The case was different with the natural powers, as representative of which we will take the land with which those powers are bound up. No one has produced the land, therefore no one has a claim of ownership upon it, and everyone has a right to use it. But not merely has no one produced the land, no one can produce it; the land, therefore, exists in a limited quantity, and, moreover, the existing land is not all of the same quality. Now, in spite of all this, how is it possible to satisfy everyone's claim not merely to land, but to produce-bearing land?