This work is protected by copyright and other intellectual property rights, which are retained by the thesis author, unless otherwise stated. A copy can be downloaded for personal non-commercial research or study, without prior permission or charge. This thesis cannot be reproduced or quoted extensively from without first obtaining permission in writing from the author. The content must not be changed in any way or sold commercially in any format or medium without the formal permission of the author. When referring to this work, full bibliographic details including the author, title, awarding institution and date of the thesis must be given. Sworn for the regular thrashings at squash, football, pool and board games over the years. Someday I might get better. Special thanks goes to my friends and Alan Wilson, for their company, support and beautiful minds. I'd like to thank all the faculty staff at the University of Edinburgh for their feedback over the years. In particular, I'd like to thank my supervisors at Edinburgh, Allan Hazlett and Duncan Pritchard for all their feedback and encouragement, as well as my masters supervisor at the University of Hertfordshire, Sam Coleman, who helped me along in the first steps towards what would eventually become this thesis. I'd like to thank Arts and Humanities Research Council for their funding of this project, without which it would not have been possible. My everlasting gratitude to my parents and grandparents who have given me love and support throughout my education, and have always believed in me even when I haven't believed in myself. A huge thanks to my friends from afar, in particular have proven that philosophy in the pub is the highest quality, but it is the most fun. Finally my thanks to Josh Habimana, who has been my closest friend and confidant, and a fountain of wisdom and happiness.