A casual question from a colleague about spam prompted me to search the web for a quotation from Richard Dawkins on co-evolutionary “arms races”. What I found was this wonderful site associated with Mark Ridley’s magnum opus Evolution. The site includes a video gallery with clips featuring Dawkins, Dennett, Maynard Smith, and others. Highly recommended.
And yes, the “arms race” quote (and QuickTime video clip) is here.