Many scholars believe that the Poems did not exist as a written book till the public copy was made by Pisistratus; see Cauer, Grundfragen der Homerkritik , , pp. 113-45; R. G. E., pp. 304-16; Leaf, Iliad, vol. i, p. xvi. This view is tempting, though the evidence seems to be insufficient to justify a pronouncement either way. See R. G. E., pp. 40 ff. On the Zeus of Aeschylus cf.