Now while patents and copyrights are a monopoly under the definition, they are quite distinct in their purpose and spirit from the monopolies already described. On the whole, Society does well in trying to protect, by law, inventors and thinkers in the sole use and benefit of their respective products for a brief and specified time. There are large difficulties in the way of reaching this end practically, as is proven by the endless and expensive lawsuits in such cases, but the postulate on which it is attempted is sound, namely, that otherwise citizens would have less motive to think and to invent; since in that case only the public-spirited and the rich could or would devote themselves to an important branch of the public progress. A patent or copyright is merely a return service which Society renders for a service received. It violates no man's right of property, as an ordinary monopoly does, but on the other hand is a provision to protect for a time a new right of property created by the thought and efforts of a deserving class of men. The phrase, "intellectual property," used above in translating from the German, is not well chosen, since we have amply learned that anything is property that can be bought and sold, that simple rights of many kinds are constantly on sale in the market, and consequently that patents and copyrights are at once proper and property because they are a technical return-service for other services ready to be rendered to the community. (b) Revenue Rights. Once at a court ball, Napoleon the First noticed a lady very richly dressed and wearing splendid diamonds, and on asking for her name, ascertained that she was the wife of a tobacco manufacturer of Paris; whereupon it occurred immediately to the quick mind of the French ruler, that the State might just as well have those great profits as an individual; and the sale of tobacco in all its forms became accordingly a State monopoly in the interest of taxation, and so it has continued to this day, and yields now about 400,000,000 francs a year. Other nations have adopted to some small extent this mode of indirect taxation of their people. By legally cutting off the competition of all private dealers in the taxed article, and by preventing to the utmost of their power its being smuggled into the country, Governments are enabled to sell the article at a price enhanced artificially by the monopoly; but all that the people are made to pay _extra_ under the monopoly, saving the costs of maintaining it, goes directly into the treasury of the State; and, so far forth, becomes an unobjectionable mode of taxation. Under all forms of taxation, the aim should clearly be, that the Treasury receive all that the People are made to pay, except the cost of an economical collection.