The Father Blas Valera, who made great researches into the history of the Yncas, gives the following particulars respecting this King. He reigned for more than fifty years, and established many laws, amongst which the most noteworthy were as follows:—He ordered that the children of the common people should not learn the sciences, which should be known only by the nobles, lest the lower classes should become proud and endanger the commonwealth. The common people were ordered to be taught the employments of their fathers, which was enough for them. All thieves, murderers, adulterers, and incendiaries were to be put to death without mercy. Children were to serve their parents until the age of twenty-five, after which time they were to be employed in the service of the state. Bias Valera also says that the Ynca Rocca was the first who established schools in the city of Cuzco, in which the Amautas imparted their learning to the Ynca princes of the blood royal, and to the nobles of the empire. The schools were not established for teaching letters, for these people had none; but to instruct the pupils concerning the rights, precepts, and ceremonies of their false religion, and the principles of their laws and customs, with their correct interpretation. It was intended that they should thus attain a knowledge of the art of governing, and become both more refined and more assiduous in the military art. The pupils were also taught the method of computing time, and of recording events, by means of knots, as well as to converse with elegance and grace, and how to bring up their children and govern their households.