Mark Lance wrote his doctoral dissertation with Robert Brandom and Nuel Belnap and held a three year post-doctoral fellowship at Syracuse University before coming to Georgetown. He is currently a Professor in both the philosophy department and the program on justice and peace, which he co-founded.

Professor Lance works mostly in the areas of philosophy of language, metaphysics and epistemology, and philosophical logic, but writes as well on pragmatism, feminism, meta-ethics, the foundations of mathematics, anarchist theory and applied issues of social justice activism. He has published over 30 articles and two books, most recently 'Yo!' and 'Lo!': The Pragmatic Topography of the Space of Reasons (with Rebecca Kukla), Harvard University Press 2009. He is currently writing a book on anarchism and rational community, continuing his project in normative pragmatics with Rebecca Kukla, working on a project on foundations of mathematics with K. Joseph Mourad, and writing a series of papers on the nature of normativity.

Outside of philosophy, Prof. Lance is an activist, organizer, and popular educator on issues of social justice and revolutionary nonviolence as well as a contributor to newappsblog.com.