In something of a welcome break with tradition, these lectures are shaped by the choices made by the organising committee for that year. Rather than have a single thinker present a whole series of lectures, the committee invited two philosophers (Kenny and Lucas) as well as two scientists (Waddington and Longuet-Higgins) to have a series of conversations, mostly extemporaneous, about the nature of mind. What makes this collection so readable is that the tone throughout is conversational and engaging, avoiding much of the technical language of either science or analytic philosophy.