Undoubtedly the most powerful influence that acted upon the character of the Virginian was the plantation system. In man's existence it is the ceaseless grind of the commonplace events of every day life that shapes the character. The most violent passions or the most stirring events leave but a fleeting impression in comparison with the effect of one's daily occupation. There is something distinctive about the doctor, the teacher, the tailor, the goldsmith. There is in each something different from the rest of mankind, and this something has been developed within him by the ceaseless recurrence of certain duties required of him by his profession. Similarly the English immigrant, isolated upon his vast plantation, surrounded by slaves and servants, his time occupied largely with the cultivation of tobacco, could not fail in the course of time to lose his mercantile instincts and to become distinctly aristocratic in his nature. The estates of the planters were very large, comprising frequently thousands of acres. William Byrd II inherited from his father 23,231 acres, but so great was his hunger for land and so successful was he in obtaining it that at his death he owned no less than 179,440 acres of the best land in Virginia.[38] Robert Carter, of Nomini Hall, owned 60,000 acres.[39] The lands of William Fitzhugh amounted to 54,000 acres, at his death in 1701.[40] Other prominent men were possessed of estates not less extensive. These vast tracts of land comprised usually several plantations that were scattered in various parts of the colony and which differed widely in value and in extent. In the region to the west beyond tidewater estates of 20,000, 30,000, or 40,000 acres were not infrequent, while in the sections that had been first settled the average size was much less. Yet the plantations that stretched along the banks of the James, the York, the Rappahannock and the Potomac were so extensive that often the residences of the planters were several miles apart. From 4,000 to 6,000 acres was the average size of the farms of the wealthier men.[41] The author of Virginia's Cure, a pamphlet printed in 1661, says: "The families ... are dispersedly and scatteringly seated upon the sides of rivers, some of which running very far into the country, bear the English plantations above a hundred miles, and being very broad, cause the inhabitants of either side to be listed in several parishes. Every such parish is extended many miles in length upon the rivers' side, and usually not above a mile in breadth backward from the river, which is the common stated breadth of every plantation, some extend themselves half a mile, some a mile, some two miles upon the sides of the rivers."[42]