We appreciate comments on the draft principles provided by B. Dass, J. Delborne, S. Eskin, S. James, N. Jordan, T. Kuiken, K. Redford, S. Scherr, and K. H. Tountas. We thank the Grantham Foundation for support to J. Shapiro of Keystone Policy Center for facilitating our dialog and thank our respective organizations for support of this work.
