Main Interests: Philosophy of Language and Logic; History of Logic; Principle of Non-Contradiction from Aristotle to the Present; Non-Classical Logics; Paraconsistency and Dialetheism. I am currently researching early 20th century challenges to the Principle of Contradiction -- specifically the emergence of early or proto-paraconsistent conceptions in the works of Nicolas Vasil'ev, Alexius Meinong, Jan Lukasiewicz (pre 1920), and Edward Conze (pre 1950).