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Reprinted in Genevieve Lloyd (ed.) : Spinoza. Critical assessments, Routledge, London-New York, 2001, vol. IV.

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"Spinoza and attitudes towards nature", in Spinoza : His Thought and Work. Entretiens in Jerusalem, 6-9 september 1977, eds. Nathan Rotenstreich and Norma Schneider, Israel Academy of Sciences and Humanities, Jerusalem, 1983, 160-175. (anglais).

"Limited definiteness of `God´ in Spinoza's System. Answer to Heine Siebrand", Neue Zeitschrift für Systematische Theologie und Religionsphilosophie, Berlin/New York, t. 28, n°3 (1986), p. 275-283. (anglais). N IX, 26.

"Is Freedom consistent with Spinoza's Determinism ?" (1974), in Spinoza, hrsg. von Martin Schewe und Achim Engstler, Peter Lang, Frankfurt am Main, coll. "Auslegungen, hrsg. von Alphons Silbermann", Bd. 2, 1990, 227-247. (anglais).

Spinoza and the deep ecology movement, Mededelingen vanwege het Spinozahuis, 67, Eburon, Delft, 1993, 16 p. (anglais). N XVI, 23-24 (Yannis Prelorentzos).

"Spinoza and ecology", in Genevieve Lloyd (ed.) : Spinoza. Critical assessments, Routledge, London-New York, 2001, vol. IV. (anglais).