High Quality Content by WIKIPEDIA articles! Peter Ludlow (born January 16, 1957), who also writes under the name Urizenus Sklar, is a professor of philosophy at Northwestern University. Before moving to Northwestern, Ludlow taught at University of Toronto, the University of Michigan, and the State University of New York at Stony Brook. He has done much interdisciplinary work on the interface of linguistics and philosophy—in particular on the philosophical foundations of Noam Chomsky`s theory of generative linguistics and on the foundations of the theory of meaning in linguistic semantics. He has worked on the application of analytic philosophy of language to topics in epistemology, metaphysics, and logic, among other areas.