The English kings had made a further mistake. They proposed, like later kings of Spain in South America, to exploit Ireland for the benefit of the crown and the metropolis, not for the welfare of any class whatever of the inhabitants; the colonists were to be a mere garrison to conquer and hold the land for the king. But the Anglo-Norman adventurers had gone out to find profit for themselves, not to collect Irish wealth for London. Their "loyalty" failed under that test. The kings, therefore, found themselves engaged in a double conflict, against the Irish and against their own colonists, and were every year more entangled in the difficulties of a policy false from the outset. Yet another difficulty disclosed itself. Among the colonists a little experience destroyed the English theory of Irish "barbarism." The invaders were drawn to their new home not only by its wealth but by its beauty, the variety and gaiety of its social life, the intelligence of its inhabitants, and the attraction of its learning and art. Settlers, moreover, could neither live nor till the lands they had seized, nor trade in the seaports, nor find soldiers for their defence, without coming to terms with their Irish neighbours. To them the way of wealth lay not in slaughter but in traffic, not in destroying riches but in sharing them. The colonists compromised with "the Irish enemy." They took to Irish dress and language; they recognised Irish land tenure, as alone suited to the country and people, one also that gave them peace with their farmers and cattle-drivers, and kept out of their estates the king's sheriffs and tax-gatherers; they levied troops from their tenants in the Irish manner; they employed Irishmen in offices of trust; they paid neighbouring tribes for military service--such as to keep roads and passes open for their traders and messengers. "English born in Ireland," "degenerate English," were as much feared by the king as the "mere Irish." They were not counted "of English birth"; lands were resumed from them, office forbidden them. In every successive generation new men of pure English blood were to be sent over to serve the king's purpose and keep in check the Ireland-born.