What does it mean for an argument to be valid? Few questions are more fundamental to logic – and few have generated more diverse and sophisticated answers across different times, places, and intellectual traditions. This volume brings together twelve studies from the inaugural Pan-American Symposium on the History of Logic (UCLA, 2019), tracing the concept of logical validity from fifth-century BCE Indian philosophy to nineteenth-century semiotics. Contributions range across Aristotelian syllogistic, Buddhist and Jain logic, medieval Latin theories of consequence, Avicenna’s metaphysical logic, early modern diagrammatic approaches, and Russophone logical pluralism. Rather than forcing these traditions into a single developmental narrative, the volume embraces a genuinely comparative and global perspective on logic’s past – one that brings into focus the enduring theoretical stakes of a concept at the very heart of logic and rational inquiry in general.
Available also via www.philosophiaverlag.com.
Graziana Ciola