After stating categorically his principles, Jefferson did not object to minor modifications when it came to practice. As early as the winter of 1781 he had found and determined the main tenets of his political philosophy. It was essentially American and practical. The idea never entered his mind that in order to establish an American government it was necessary to make a _tabula rasa_ of what existed before. As a matter of fact, Americans had certain vested rights through several charters enumerated by Jefferson in answer to Query XIII; they had revolted in defense of these rights, but the principles of their government, "perhaps more peculiar than those of any other in the universe", were simply "a composition of the freest principles of the English constitution, with others derived from natural right and natural reason." Essentially "founded in common law as well as common right", it was not necessarily the best possible form of government or the only one imaginable, "for every species of government has its specific principle." But despite its imperfections, it was better adapted to American conditions than any other that could be devised. At that time, at least, Jefferson did not seem to suspect that it could be taken as a model by any other nations, or that its main principles would prove so "contagious." The situation of America was unique. Unlimited agricultural lands extended to the west, and one could estimate that it would take at least a century to reach a density of population comparable to that of the British Isles. For a long time America would remain mainly agricultural, with a population scattered in farms instead of being concentrated in large cities, and would keep many of the virtues inherent in country life. In addition, the country would be practically free from any attack by land, as she had no powerful neighbors. She was geographically isolated from the rest of the world, and even if she were attacked by sea, it would be by a fleet operating far from its base and therefore at a disadvantage. No permanent army had to be maintained and a comparatively small fleet would suffice for protection. Free from the ordinary "sores" of civilization, not yet wealthy but prosperous, for, says Jefferson "I never saw a native American begging in the streets or highways", a country peaceful and with hatred towards none, not even to "that nation which has injured us most",--such is the ideal picture of America drawn by Jefferson for himself and his French correspondent during the winter of 1781-1782.