, Volume 188, Issue 3, pp 349-366

First online:

Open Access This content is freely available online to anyone, anywhere at any time.

Arthur Prior and medieval logic

  • Sara L. UckelmanAffiliated withInstitute for Logic, Language, and Computation Email author 


Though Arthur Prior is now best known for his founding of modern temporal logic and hybrid logic, much of his early philosophical career was devoted to history of logic and historical logic. This interest laid the foundations for both of his ground-breaking innovations in the 1950s and 1960s. Because of the important rôle played by Prior’s research in ancient and medieval logic in his development of temporal and hybrid logic, any student of Prior, temporal logic, or hybrid logic should be familiar with the medieval logicians and their work. In this article we give an overview of Prior’s work in ancient and medieval logic.


Diodoros Chronos Future contingents Jean Buridan Medieval logic Temporal logic Walter Burley