[218] He was _sui iuris_ (Gaius i. 130), as soon as he was chosen or taken (_captus_) by the Pontifex maximus; but he was subject to the authority of the P.M., like all the other flamines and the Vestals. See Wissowa, _R.K._ p. 438; Tac. _Ann._ iv. 16. LECTURE VI THE DIVINE OBJECTS OF WORSHIP We must now turn our attention to what is the most difficult part of our subject, the ideas of the early Romans about "the Power manifesting itself in the universe." In my first lecture I indicated in outline what the difficulties are which beset us all through our studies; they are in no part of it so insurmountable as in this. Material fails us, because there was no contemporary literature; because the Romans were not a thinking people, and probably thought very little about the divine beings whom they propitiated; and again, because comparative religion, as it is called, is of scant value in such a study. We have to try and get rid of our own ideas about God or gods, to keep our minds free of Greek ideas and mythology, and, in fact, to abstain from bringing the ideas of any other peoples to bear upon the question until we are pretty sure that we have some sort of understanding of those Roman ideas with which we are tempted to compare them. The first duty of the student of any system of religion is to study that religion in and by itself. As M. S. Reinach observed in an address at the Congress for the History of Religions at Oxford, it is time that we began to attend to differences as well as similarities; and this can only be done by the conscientious use of such materials as are available for the study of each particular religion.