Winnifred Fallers Sullivan will present the 2015 Witherspoon Lecture, The Impossibility of Religious Freedom, at 7:00 p.m. Thursday, April 2, in McKnight Hall in the Cone Building at UNC Charlotte. Sullivan, Professor and Chair of the Department of Religious Studies at Indiana University and Affiliate Professor of Law at Maurer School of Law, has published three books analyzing legal discourses about religion in the context of the religion clauses of the First Amendment and related legislation.