To preserve this national tradition a learned class was carefully trained. There were schools of lawyers to expound the law; schools of historians to preserve the genealogies, the boundaries of lands, and the rights of classes and families; and schools of poets to recite the traditions of the race. The learned men were paid at first by the gifts of the people, but the chief among them were later endowed with a settled share of the tribe land in perpetuity. So long as the family held the land, they were bound to train up in each generation that one of the household who was most fit to carry on learning, and thus for centuries long lines of distinguished men added fame to their country and drew to its schools students from far and wide. Through their work the spirit of the Irish found national expression in a code of law which showed not only extraordinarily acute and trained intelligence but a true sense of equity, in a literary language of great richness and of the utmost musical beauty, and in a system of metrical rules for poets shaped with infinite skill. The Irish nation had a pride in its language beyond any people in Europe outside of the Greeks and Romans. While each tribe had its schools, these were linked together in a national system. Professors of every school were free of the island; it was the warrior's duty to protect them as they moved from court to court. An ancient tale tells how the chiefs of Emain near Armagh placed sentinels along the Gap of the North to turn back every poet who sought to leave the country and to bring on their way with honour every one who sought to enter in. There was no stagnation where competition extended over the whole island. The greatest of the teachers were given the dignity of "Professors of all the Gaels." Learned men in their degrees ranked with kings and chiefs, and high-professors sat by the high-king and shared his honours. The king, said the laws, "could by his mere word decide against every class of persons except those of the two orders of religion and learning, who are of equal value with himself."