“A patent is simply and purely a grant of monopoly. Why would a supposedly enlightened government, which has laws against monopolies in other forms, grant them? The original idea was the opposite: you wanted the inventor to publish a description of the invention instead of keeping it secret. To induce him to, you offered, legally, some of the protection that he would have gotten by keeping the secret, enough to get a good head start on the competition. It's not a bad idea, if it were done right...”