In the response of Penelope, O.19.562–569, to the response of Odysseus in interpreting her dream, she says that there are two kinds of dreams, passing through two kinds of pulai ‘gates’, O.19.562: the first kind passes through a gate of keras ‘horn’, and the second kind, through a gate of elephas ‘ivory’, O.19.563. The first kind signals what is real, while the second, what is deceptive. That is why the mental power of distinguishing what is real from what is unreal becomes so seriously important. But there is also a playful side to these images of horn and ivory, as reflected in the word play that links (1) the noun keras ‘horn’ with the verb krainein in the sense of ‘authorize as real’, O.19.567, and (2) the noun elephas ‘ivory’ with the verb elephairesthai in the sense of ‘deceive’, O.19.565. The object of the verb krainein ‘authorize as real’ here is etuma ‘real things’ (ἔτυμα), O.19.567: that is what dreams from a Gate of Horn will bring. Correspondingly, the object of what is brought by dreams from a Gate of ivory is a-kráan-ta ‘unauthorized’ (ἀκράαντα), O.19.565. The playfulness extends further: I suspect that the symbolism of keras ‘horn’ here involves not only the elevated sense of ‘authorization’ but also the earthy sense of sexual desire. I suspect that the Aphrodisiac properties linked with horn as a substance are in play here. Perhaps relevant is all the folkore surrounding the earthy English adjective ‘horny’. When I speak of ‘horn’ here, I have in mind primarily the kerata ‘antlers’ of deer, the aphrodisiac properties of which are highlighted for example by the physician Galen (vol. 14 p. 240 ed. C. G. Kühn 1827). I ask myself: why does Penelope cry and cry in her dream about losing her geese? Perhaps her familiarity with the geese can be linked with her familiarity—however unwelcome—with the suitors. The geese have been around for twenty years, and where was the eagle during all this time? Perhaps that is why it is safe for Penelope to offer a recusal at O.19.568–569: surely my dream came from a Gate of Ivory, not from a Gate of Horn. For more on Penelope’s dream, I strongly recommend the analysis of Levaniouk 2011:229–246, with a critical survey of the multifarious interpretations that have been offered over the years by experts and nonexperts alike.