Letter of the month, August 2018

Soon after the publication of Gareth Evans’s classic one-page Analysis paper on vagueness in 1978, Lewis was struck by how many misunderstood what Evans was up to. He wrote several letters about this issue. His letter to Allen Hazen, 15 November 1978, led to Lewis’s...

Letter of the month, July 2018

Lewis’s recipient - John Coker - was a student of Alvin Plantinga at Notre Dame in the 1980s. Coker wrote a paper arguing that modal realism, with Lewis’s added trappings of concrete worlds, no overlap, qualified principle of recombination, etc, is atheististic in the...

Letter of the month, June 2018

In this letter, Lewis provides comments on a draft of Colin McGinn’s 1980 Functionalism and Phenomenalism: A Critical Note. Australasian Journal of Philosophy 58 (March):35-46. This letter is important for understanding Lewis’s theory of mind but also for...

Letter of the month, May 2018

In this letter to Campbell, Lewis discusses the relationship between tropes and theories of space and time in the philosophy of physics. What is a Trope? Tropes are properties or relations which are not universal, but particular. For instance, the blackness of this...

Letter of the month, April 2018

In this letter to Solomon, Lewis reflects on disagreement in philosophy and ascribing mental states to turkeys. Disagreement in Logic and Philosophy Lewis believes that philosophical disagreements often reach a deadlock where neither side will move. Lewis here points...

Letter of the month, March 2018

In this letter to Follesdal, Lewis presents an early draft of his famous theory of counterparts. Do Possible Worlds Exist? Famously, Lewis believed in the existence of infinitely many physical possible universes. Lewis had been an early adopter of modal logic. Such...