e45.
The full text of Deep Ecology’s Basic Principles by Arne Næss and George Sessions is in Bill Devall and George Sessions (1985), Deep Ecology, p 70.
The principles are discussed in Arne Næss, “The Deep Ecology Movement: Some Philosophical Aspects”, Philosophical Enquiry, 8, 1986, revised and reprinted in Andrew Light and Holmes Rolston III, eds. (2002), Environmental Ethics, pp 262–274; in Keller, ed. (2010), pp 240–245; and in Arne Næss (2008), The Shallow and the Deep Ecology Movement, reprinted in Keller, ed. (2010), pp 230–234.
See also Arne Næss (1989), Ecology, Community and Lifestyle.
For Næss’ self-imposed exile on the mountain and the idea of “withdrawal and return”, the classic text is Arnold Toynbee (1933), A Study of History, pp 217–240.