Hanoch Ben-Yami
Central European University
I show that intuitive and logical considerations do not justify introducing Leibniz’s Law of the Indiscernibility of Identicals in more than a limited form, as applying to atomic formulas. Once this is accepted, it follows that Leibniz’s Law generalises to all formulas of the first-order Predicate Calculus but not to modal formulas. Among other things, identity turns out to be logically contingent.
Keywords Leibniz’s Law  indiscernibility of identicals  identity  necessity  contingency
Categories (categorize this paper)
Reprint years 2018
DOI 10.31820/ejap.14.2.1
Edit this record
Mark as duplicate
Export citation
Find it on Scholar
Request removal from index
Revision history

Download options

PhilArchive copy

 PhilArchive page | Other versions
Through your library

References found in this work BETA

Modal Logic for Philosophers.James W. Garson - 2006 - Cambridge and New York: Cambridge University Press.

View all 13 references / Add more references

Citations of this work BETA

Add more citations

Similar books and articles

Indiscernibility of Identicals and Substitutivity in Leibniz.Ari Maunu - 2002 - History of Philosophy Quarterly 19 (4):367-380.
Relative Identity and Leibniz's Law.Leslie Stevenson - 1972 - Philosophical Quarterly 22 (87):155-158.
The Contingency of Leibniz's Principle of the Identity of Indiscernibles.Julia Jorati - 2017 - Ergo: An Open Access Journal of Philosophy 4:899–929.
Rigidity, Occasional Identity and Leibniz' Law.Simon Langford & Murali Ramachandran - 2000 - Philosophical Quarterly 50 (201):518-526.
Modal Objection to Naive Leibnizian Identity.Dale Jacquette - 2011 - History and Philosophy of Logic 32 (2):107 - 118.
Contingency, Imperfection and Evil.Saša Stanković - 2017 - Quaestiones Disputatae 7 (2):50-71.
Bochenski on Property Identity and the Refutation of Universals.Dale Jacquette - 2006 - Journal of Philosophical Logic 35 (3):293-316.


Added to PP index

Total views
1,352 ( #4,093 of 2,519,861 )

Recent downloads (6 months)
50 ( #16,641 of 2,519,861 )

How can I increase my downloads?


My notes