, 1987, Humanistic education: some philosophical considerations, in R. Straughan & J. Wilson (eds.), Philosophers on education, Basingstoke, Palgrave Macmillan, pp. 93-106.
, 1975, Review: Gurwitsch Aron, Leibniz, Studia Leibnitiana 7.
, 1954a, Spinoza's theory of knowledge, Clarendon Press, Oxford.