Danielle Macbeth is T. Wistar Brown Professor of Philosophy at Haverford College in Pennsylvania and the author of Frege's Logic (Harvard University Press, 2005). She has also published on a variety of issues in the history and philosophy of mathematics, philosophy of language, philosophy of mind, pragmatism, and other topics. She was a Fellow at the Center for Advanced Study in the Behavioral Sciences in 2002-3, and has been the recipient of both an ACLS Burkhardt Fellowship and a Fellowship from the National Endowment for the Humanities.