From Anne Carson’s Eros the Bittersweet, pg. 55:
The alphabet they used is a unique instrument. It’s uniqueness unfolds directly from its power to mark the edges of sound. For, as we have seen, the Greek alphabet is a phonetic system uniquely concerned to represent a certain aspect of the act of speech, namely the starting and stopping of each sound. Consonants are the crucial factor. Consonants mark the edges of sound. The erotic relevance of this is clear, for we have seen that eros is vitally alert to the edges of things and makes them felt by lovers. As eros insists upon the edges ofXXXXX human beings and of the spaces between them, the written consonant imposes edge on the sounds of human speech and insist on the reality of that edge, although it has its origin in the reading and writing imagination.