In the Fourth Book of _De Principiis_, Origen explains at length his views on the interpretation of Scripture. It has a "body," which is the "common and historical sense"; a "soul," a figurative meaning to be discovered by the exercise of the intellect; and a "spirit," an inner and divine sense, to be known only by those who have "the mind of Christ." He considers that incongruous and impossible things are introduced into the history to arouse an intelligent reader, and compel him to search for a deeper explanation, while simple people would read on without appreciating the difficulties.[146] Cardinal Newman, in his _Arians of the Fourth Century_, has some interesting remarks on the _Disciplina Arcani_, but, with the deeply-rooted ingrained scepticism of the nineteenth century, he cannot believe to the full in the "riches of the glory of the Mystery," or probably never for a moment conceived the possibility of the existence of such splendid realities. Yet he was a believer in Jesus, and the words of the promise of Jesus were clear and definite: "I will not leave you comfortless; I will come to you. Yet a little while, and the world seeth me no more; but ye see me: because I live, ye shall live also. At that day ye shall know that I am in my Father, and ye in me, and I in you."[147] The promise was amply redeemed, for He came to them and taught them in His Mysteries; therein they saw Him, though the world saw Him no more, and they knew the Christ as in them, and their life as Christ's. Cardinal Newman recognises a secret tradition, handed down from the Apostles, but he considers that it consisted of Christian doctrines, later divulged, forgetting that those who were told that they were not yet fit to receive it were not heathen, nor even catechumens under instruction, but full communicating members of the Christian Church. Thus he states that this secret tradition was later "authoritatively divulged and perpetuated in the form of symbols," and was embodied "in the creeds of the early Councils."[148] But as the doctrines in the creeds are to be found clearly stated in the Gospels and Epistles, this position is wholly untenable, all these having been already divulged to the world at large; and in all of them the members of the Church were certainly thoroughly instructed. The repeated statements as to secrecy become meaningless if thus explained. The Cardinal, however, says that whatever "has not been thus authenticated, whether it was prophetical information or comment on the past dispensations, is, from the circumstances of the case, lost to the Church."[149] That is very probably, in fact certainly, true, so far as the Church is concerned, but it is none the less recoverable.