David Hutchison is an educator and ecologists. In this paper, he suggests how ecological vision can be translated into five aspects of educational practice: the interdisciplinary emphasis, eco-orientation to citizenship, inquiry learning, outdoors acclimatization, and social activism. These five levels of training constitute the holistic preparation for forging new levels of responsibility and sensibility for the natural world in the self-actualized adult. [Reprinted from "The NAMTA Journal" 28, 1 (2003, Winter): 207-218. This paper is adapted from a keynote address at the NAMTA conference titled "Montessori Education for Human Development: The Child in the Natural World," in Chicago, IL October 31-November 3, 2002.