We are All Children of God

  • M. J. Cresswell
Part of the Synthese Library book series (SYLI, volume 178)


In a recent article, ‘An Immaculate Conception of Modality’, Brian Skyrms [14] has shewn how to interpret the necessity operator in various modal systems as a metalinguistic predicate of sentences. The principal task of the present paper will be to shew that any intensional operator may be construed in this way. I will then make some remarks about the philosophical importance of this fact, the burden of which will be that it frees a philosopher to do things intensionally or metalinguistically according to taste. I will then link the equivalence proofs with some suggestions Robert Stalnaker has made in connection with the problem of the semantics of propositional attitudes. The paper is self-contained but I suspect that a better appreciation of what is going on will be aided by a careful reading of Skyrms’ paper. Also, some familiarity with Stalnaker’s use of double indexing in, e.g., [16] will help in the later sections. I would like to thank Steve Boer who drew my attention to the Skyrms article when he was in Wellington in July and August of 1979.


Modal Logic Modal System Accessibility Relation Propositional Attitude Atomic Sentence 
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© D. Reidel Publishing Company 1985

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  • M. J. Cresswell

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