And treating poetry as a performing art emphasizes its ephemerality. A printed poem can be endlessly reprinted, photocopied, scanned, uploaded, cut and pasted - but a performance, even if somebody's there with a video camera, is one time only: the audience experiences something that won't exist when the performance is over, and which won't ever be reproduced in exactly the same form. I find that appealing.

I want each poem to be ambiguous enough that its meaning can shift, depending on the reader's own frame of reference, and depending on the reader's mood. That's why negative capability matters; if the poet stops short of fully controlling each poem's meaning, the reader can make the poem his or her own.

If art doesn't require an audience, can an intimate conversation be a work of art? Can a thought be a work of art? Maybe. I don't know. These questions are completely hypothetical for me, because I love interacting with audiences. I want my poems to be heard.

I wrote the poems in Charms Against Lightning one by one, over almost a decade, and I did not write them toward any theme or narrative. But once I really got serious about putting together a book, I began to see that in fact there were themes across the poems, if only because my own obsessions had brought me back time and again to the same ground. I realized that any ordering of the poems would determine how those themes developed over the manuscript, and how the collection's dramatic conflicts were resolved.

I can't read my poem "Distracted by an Ergonomic Bicycle" without thinking of Seattle, where the events of the poem took place, and I can't read "In Defense of the Semicolon" without thinking of Toronto - but why should that matter to anyone else? If another reader imagines "In Defense of the Semicolon" taking place in New Orleans, great.

I do consider myself Canadian, but I feel American, too. I've spent more than fifteen years in each of the two countries, so really I just think of myself as a dual citizen, which is what I am. Thankfully, I've never been forced to choose!

I try not to think in terms of what poems or poets should do. Most of us appreciate a wide diversity in music, in cooking, in movies, but in our own medium, poetry, we often fail to make allowances for tastes and projects other than our own.