A customary law for a people of advancing civilization and power must expand with corresponding rapidity. There will soon be disputes as to what it is on certain points and a demand for some authoritative information as to this. In Rome, the priests gave it at first, and then the lawyers. In England, the priests never gave it, as priests. There was no sacred college of law. Priests took part in legislation. A priest, at the king's right hand, was his spokesman in doing equity. But it was from the first the king as a judge, or the king's judges deputed by him and sitting for him, who settled controverted questions of common law. For the Roman and for the Englishman the first representatives of government who could be called judges were primarily and principally executive officers. The Roman _praetor_ was not given judicial functions because he had legal attainments. The _aula regis_ of early England was composed of the great officers of state. The chief justiciar, however, soon ceased to be prime minister. His associates on the bench, as law became a recognized profession, came to be chosen largely for their fitness for judicial work and to be kept at it during the king's pleasure. At Rome, on the contrary, the praetorship remained a political place, held for a fixed term, and a brief one. Information as to the unwritten law applicable to any controversy between parties had therefore to be sought from others. The lawyers could give it; and it was to them, not to the judges, that resort was had. The opinion of a great jurist was for Rome what the opinion of a judge was for England. It was commonly accepted as conclusive not only by the people but by the courts. Such opinions profess to state what the law was by which rights accrued out of a past transaction. In fact, they often do much more. By declaring that to be the law, and declaring it with authority, they are the first to make it certain that it is the law. The difference between this and making law is not great. The Romans at first accorded authority to the opinions (_responsa_) of lawyers only because of the standing and reputation of those who gave them. Later the emperors gave an official character and weight to the opinions of certain lawyers of the past. The English always accorded authority to the opinions of their judges, because they spoke for the state. Americans from the first have done the same.