The whole religious practice (religio) of the Roman people is divided into ritual (sacra), auspices (auspicia), and prophetic warnings…. I have always thought that none of these areas of religion are to be despised, since I am convinced that Romulus by his auspices and Numa by his establishment of ritual laid the foundations of our state, which assuredly could never have been as great as it is had we not maintained the fullest measure of divine favor.

More than one kind of divination is used in public and in private. To say nothing of other peoples, how many kinds have our own people embraced! Initially, according to tradition, Romulus, the father of this city, not only founded it with due auspices, but he himself was an excellent augur. Then other kings used other augurs and, after the expulsion of the kings, no public business was ever transacted at home or abroad without first taking the auspices.