If you have this deep feeling of empathy for the natural world, you feel it so profoundly. It's almost a religious experience. I feel that I could never really say the depth of feeling or connection I feel to the natural world, which has made me.

There is a difference between our wisdom and nature's simplicity. That reflects the burden of a complex intelligence. A complex intelligence like ours is impotent compared to the intelligence of a monarch butterfly migrating from Canada to Mexico, or the intelligence of hummingbirds that have co-evolved with the flowers all along their migration route. That seems so simple; it just happens, it just unfolds.

I had wanted for so many years to feel that writing really was at the center of my life, not something I did in my spare time. So the writing and teaching feel in some way to be one thing - the personal engagement and the social engagement good partners.

Climate change is a moral challenge, not simply an economic or technological problem. It is linked to social justice, because it is the poor citizens of the world who will suffer the most from our excesses.

For the poets, my hope is that they will, quite simply, feel the obligation to be really informed about the situation in which we find ourselves, in terms of our imperiled planet. You should inform yourself so deeply that it becomes part of your nature, part of your voice.

Earth's immune system - its rapid response team of self-protection - becomes invigorated at times of peril. And one sees it at play now in the upwelling of grassroots work aimed at finding a sustainable future.

I like to use research to enlarge the poem. And sometimes a rhetorical or syntactical gesture stitches the poem along.