Each time I caught sight of geese swooping in formation across the sky, I wondered how our life below might look from their perspective, and imagined that, were they ever to indulge in such speculation, the high-rises might seem to them like firs massed in a grove.

Being Nigerian is a strong part of my identity. Being American is a strong part of my identity. And there are important parts of who I am that really have nothing to do with my national connection.

The big idea behind it was to somehow participate in the discussion about justice. What does it mean to be just to the others out there whose lives we do not think about. One of the answers I came up with was simply tell their stories.

Killing a bunch of people in Sudan and Yemen and Pakistan, it's like, "Who cares - we don't know them." But the current discussion is framed as "When can the President kill an American citizen?" Now in my mind, killing a non-American citizen without due process is just as criminal as killing an American citizen without due process - but whatever gets us to the table to discuss this thing, we're going to take it.

The creative part of oneself finds its way out. In this case, I got interested particularly in the medium of Twitter and looked for ways to use it creatively.

In a sense, Open City is a kind of Wunderkammer, one of those little rooms assembled with bric-a-brac by Renaissance scholars. I don't mean it as a term of praise: these cabinets of curiousities contained specific sorts of objects - maps, skulls (as memento mori), works of art, stuffed animals, natural history samples, and books - and Open City actually contains many of the same sort of objects. So, I don't think it's as simple as literary inclusiveness.

There's a reticence necessary when you consider the suffering of others. Into the space created by that reticence, you bring in those things that best help us confront ambiguity: music, painting, film, and so on.