- The Ecology of Wisdom: Writings by Arne Naess
- Ecology, Community and Lifestyle: Outline of an Ecosophy
- Livsfilosofi. Et personlig bidrag om følelser og fornuft
- Four Modern Philosophers: Carnap, Wittgenstein, Heidegger, Sartre
- Invitation to Chinese philosophy: Eight studies (Scandinavian university books)