Frege and saving substitution

Brian Rabern, Bryan Pickel

Research output: Contribution to journalArticlepeer-review


Goodman and Lederman (2020) argue that the traditional Fregean strategy for preserving the validity of Leibniz’s Law of substitution fails when confronted with apparent counterexamples involving proper names embedded under propositional attitude verbs. We argue, on the contrary, that the Fregean strategy succeeds and that Goodman and Lederman’s argument misfires.
Original languageEnglish
JournalPhilosophical Studies
Early online date16 Oct 2020
Publication statusE-pub ahead of print - 16 Oct 2020


  • Leibniz’ Law
  • substitution
  • Frege
  • sense
  • ambiguity
  • opacity
  • validity

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