Anderson, John : The picture is used courtesy of the University of Sydney.
Dummett: The picture of Dummett is used with the permission of Robert S. Kissel.
Imagery and Imagination: The initial photo of the Grand Canyon was taken by Jim Gordon from Biloxi, MS, USA in 2008. It is licensed under the Creative Commons Attribution 2.0 License.
Knowledge Argument: The picture of Frank Jackson is (c) D H Mellor 2005, and used with permission of Mellor.
Rahner:"Karl Rahner by Letizia Mancino Cremer" by Andy Nestl - Own work. Licensed under CC BY-SA 3.0 via Wikimedia Commons - https://commons.wikimedia.org/wiki/File:Karl_Rahner_by_Letizia_Mancino_Cremer.jpg#/media/File:Karl_Rahner_by_Letizia_Mancino_Cremer.jpg
Santayana: The picture of Santayana is used with permission of James Turnure.
Truth: The picture of Alfred Tarski is used with permission of the editor of the Polish Philosophy Page at: http://www.fmag.unict.it/PolPhil/Tarski/Tarski.html
Zizek: The photographer is Mariusz Kubik.
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