Professor Jeremy Waldron, University Professor at the New York University Law School, delivers the third in the 2015 Gifford Lecture series, entitled "Looking for a Range Property: Hobbes, Kant, and Rawls". In 'A Theory of Justice' Rawls introduced the idea of a 'range property' - a sort of threshold-based approach to the significance of variations in a certain range. Professor Waldron explores this idea, which Hobbes and Kant also implicitly relied on. Recorded on 29 January 2015 at the University of Edinburgh's Playfair Library.