Luis Radford is professor at the School of Education Sciences at Laurentian University in Sudbury, Ontario, Canada. His research interests cover both theoretical and practical aspects of mathematics thinking, teaching, and learning. His current research draws on Lev Vygotsky's historical-cultural school of thought, as well as Evald Ilyenkov's epistemology, in a conceptual framework influenced by Emmanuel Levinas and Mikhail Bakhtin, leading to a non-utilitarian and a non-instrumentalist conception of the classroom and education.