Poetry is perhaps the oldest art form. We can go back to an age-old idea of naming things, the Adamic impulse - to give something a name has always been an immensely powerful thing. To name something is to own it, to capture it. A poem is still a kind of spell, an incantation. Historically, a poem also invoked: it was a blessing, or a curse, or a charm. It had a motile power, was able to summon something into being. A poem is a special kind of speech-act. In a good poem there's the trance-like effect of language in its most concentrated, naked form.