“The basis upon which you issue and redeem money is entirely different. You may have a scarcity of money and an abundance of commodities, or you may have an abundance of money and a scarcity of commodities. A rich gold mine tends to increase the volume of money, and tends to decrease the quantity of commodities. The more you monopolize money, the more it conduces to the interest of the wealthy--the higher the interest will be and the more the stored-up dollar of the capitalist increases in purchasing power. The volume of the Marsian money, which is based on a day’s productive labor, is always practically equal to the quantity of negotiable wealth. Money, based on a day’s productive labor, where opportunity for labor is always open to all, can never be scarce. This is the case on Mars, and, therefore, we never have a scarcity of money. With you things are vastly different. All your institutions are partly warped by your unjust medium of exchange. “7. Our money can not be monopolized so that it draws interest. “Before we can intelligently discuss this feature, I shall be obliged to make a few statements concerning our social and other economic conditions. An earthite uses money for many purposes where a Marsite uses no money at all. For example, a Marsite does not buy and sell land. The individual on Mars needs no money for the construction of his dwelling. Our dwellings are erected by the collective labor of the members of the community. A Marsite needs no money for his tools, his machinery, his implements, his garden, orchard, park, boulevards, motor-lines, railroad, light and fuel; all this is furnished collectively by the members of the community, because we found that by co-operation it can be done with much less labor than it can be done by single-handed effort. Above the public wear and tear and improvements, all the labor that a community needs expend is for the purpose of keeping its store-houses well filled. Thus you see that a Marsite, on account of his co-operate production, never needs a large sum of money at once. _Our individual_ buys his meals, his clothes, his private luxuries, the furniture for his private apartment, his railroad ticket, etc., etc.; but all this requires no large investment at any one time. And as he can go to work at any day and earn a sum equal to the purchasing power of ten of your dollars, he is not very likely to borrow money and pay interest. No individual can expend $10 a day for these _private_ purposes only, unless he becomes wasteful.