|Other Retailer||Price Checked Time||Their Price in AUD||Our Price|
|Amazon UK||3 days ago||31.08||$15.47||You save $15.61|
|Amazon US||20 days ago||24.27||$15.47||You save $8.80|
John Heaton is a psychotherapist and was a colleague of RD Laing. He studied natural and moral sciences at Trinity College, Cambridge, attending lectures by Bertrand Russell. Judy Groves is a painter, illustrator and designer who has worked on numerous Graphic Guides including Chomsky, Philosophy and Plato.