Arrian frankly admits in his Introduction that he drew most of his material from Aristobulus and Ptolemy, for one had served with Alexander and the other was a king. His final statement is that he had criticized some of the acts of Alexander, for the sake of truthfulness and as an aid to men; and this had been done not without the help of God. The latter part of this statement explains the frequent use of rO GElO'v and rO 3aqiovLov in the Anabasis, for they clearly indicate the religious attitude of the author. In addition to the material from his main sources he gives other items that he deems credible. Especially in iv. 14. 4; vi. 11. 2, and vii. 3. 6 he shows that on some points there were several divergent accounts, and, because of this, it was necessary for him to express his own views frequently. For this reason the Anabasis is not only a record of accepted facts, but also a criticism of many phases of the current history of Alexander. To show these two elements in the work, we shall divide the discussion into two parts: I, The Historical; and II, The Critical.