The most convincing evidence that the leading settlers in Virginia were of the mercantile class is to be found by a study of the characteristics of the planters of the 17th century. Contemporaneous writers are unanimous in describing them as mercantile in their instincts. De Vries, a Dutch trader, complaining of the sharpness of the planters in a bargain, says, "You must look out when you trade with them, for if they can deceive any one they account it a Roman action."[35] Hugh Jones says, "The climate makes them bright and of excellent sense, and sharp in trade.... They are generally diverted by business or inclination from profound study ... being ripe for management of their affairs.... They are more inclined to read men by business and conversation than to dive into books ... being not easily brought to new projects and schemes; so that I question, if they would have been imposed upon by the Mississippi or South-Sea, or any other such monstrous Bubbles."[36] And this evidence is corroborated fully by letters of Virginia planters to English merchants. They show that the wealthy Virginian of the 17th century was careful in his business dealings, sharp in a bargain, a painstaking manager, and in his private life often economical even to stinginess. Robert Carter, one of the wealthiest men of the colony, in a letter complains of the money spent upon the outfit of the Wormley boys who were at school in England, thinking it "entirely in excess of any need." William Fitzhugh, Philip Ludwell, William Byrd I, typical leaders of their time, by the mercantile instinct that they inherited from their fathers were enabled to build up those great estates which added such splendor to the Virginia aristocracy of the 18th, century.[37] Having, as we hope, sufficiently shown that the leading planters of Virginia were not in any large measure the descendants of Englishmen of high social rank, and that with them the predominant instinct was mercantile, we shall now proceed to point out those conditions to which the planters were subjected that changed them from practical business men to idealistic and chivalrous aristocrats.