How would you illustrate matters concerning the mind? Well most of these Pelican and Penguin book covers use circles in some form as the shape of choice, add to that a few crazy squares, an ink blot and the occasional photo. The indistinct nature of the content allows rather graphic, abstract forms to occur - me likey. This set is also viewable in my Flickr gallery 'Illustrating the mind > Psychology Book Covers' - http://www.flickr.com/photos/kathykavan/galleries/72157625545004808/