Thank you to both Marian Tupy and Gale Pooley for their consideration of our response to their initial essay. And thank you too to the Cato Institute for instigating and facilitating the process—and to Giorgos Kallis for his essay and response. In an era often characterized by division rather than dialogue and by dogmatism rather than deliberation, this exchange is an important example of constructive conversation, of which more is needed. I want to offer just a few reflections for now. I suspect where we disagree is sometimes less on broad reflections, but perhaps on nuance and implications. For example: