Abstract
Many reasons have been put forward to explain why Aeneas and the Sibyl should depart through the gate of ivory, which lets out ‘false dreams’. The two views which have perhaps been found the least unsatisfactory are those of W. Everett and the one most recently championed by Brooks Otis. Everett suggested that it was a common belief in antiquity that false dreams occur before midnight, and true dreams after midnight; he went on to suggest that Aeneas left Hades before midnight, when only the ivory gate would be open. That there was such a common belief has been disputed by, among others, H. R. Steiner