With "Medieval Philosophy Redefined" John Deely provides an in-depth, original history of medieval philosophy, tracing a common thread that coherently unifies and defines what he calls 'the Latin Age' - which reaches unbroken from the fifth-century work of Augustine through to the seventeenth-century work of Poinsot. That common thread is the philosophy of sign. Sure to be controversial, this volume will be required reading for all students and scholars of the history of philosophy and medieval specialists.