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Early life and education
Quassim Cassam was born in Mombasa, Kenya, to a Gujarati Ismaili family. His parents and grandparents were all born in Kenya. His great grandparents were born in Gujarat, India, and emigrated to Kenya in the 1890s. He was a Kenyan citizen until the age of 18 but has spent most of his adult life in the U.K. He studied Philosophy, Politics and Economics (PPE) at Keble College, Oxford and was awarded an Oxford doctorate in 1985 for a dissertation on transcendental arguments.
From 1986 to 2004 Cassam taught philosophy at Oxford University, where he was a Fellow of Wadham College. In 1993 he was visiting associate professor at the University of California, Berkeley. In 2004 he held the John Evans Distinguished Visiting Professorship in Moral and Intellectual Philosophy at Northwestern University, Illinois. He was Professor of Philosophy at University College London in 2005-2006 and Knightbridge Professor of Philosophy at Cambridge University in 2007–2008. Since 2009, Cassam has been a professor of philosophy at Warwick University. In 2016 he was awarded a Leadership Fellowship by the Arts and Humanities Research Council in the UK. He has been a president of the Aristotelian Society (2010–11) and a Mind Senior Research Fellow (2012–13).
Cassam's early publications were mostly on Kant, including "Transcendental Arguments, Transcendental Synthesis, and Transcendental Idealism" (Philosophical Quarterly, 1987) and "Kant and Reductionism" (Review of Metaphysics, 1989). In recent times he has published work on epistemic vices and introduced the label 'vice epistemology' for the philosophical study of the nature and significance of epistemic vices such as closed-mindedness, overconfidence, dogmatism and wishful thinking 
He is the author of six books: Self and World (Oxford, 1997), The Possibility of Knowledge (Oxford, 2007), Self-Knowledge for Humans (Oxford, 2014), Berkeley's Puzzle: What Does Experience Teach Us? (Oxford, 2014, jointly with John Campbell), and, most recently, two books in applied epistemology: Vices of the Mind: From the Intellectual to the Political (Oxford, 2019), and Conspiracy Theories (Polity, 2019).
He is also the editor of Self-Knowledge (Oxford, 1994) and the author of the Self-Knowledge bibliography in Oxford Bibliographies Online (Oxford, 2010). His 2010 Aristotelian Society Presidential address, "Knowing What You Believe", was published in The Proceedings of the Aristotelian Society, 2011.
- Self-Knowledge (editor), Oxford University Press (1994). ISBN 978-0-19875-115-1
- Self and World, Oxford University Press (1997). ISBN 978-0-19823-895-9
- The Possibility Of Knowledge, Clarendon Press (2007). ISBN 978-0-19920-831-9
- Berkeley's Puzzle: What Does Experience Teach Us? (co-authored with John Campbell), Oxford University Press (2014). ISBN 978-0-19877-756-4
- Self-Knowledge for Humans, Oxford University Press (2014). ISBN 978-0-19877-668-0
- Vices of the Mind: From the Intellectual to the Political, Oxford University Press (2019). ISBN 978-0-19882-690-3
- Conspiracy Theories, Polity Press (2019). ISBN 978-1-50953-582-8
|Wikimedia Commons has media related to Quassim Cassam.|
- ‘CASSAM, Prof. Quassim’, Who's Who 2012, A & C Black, 2012; online edn, Oxford University Press, Dec 2011; online edn, Nov 2011 accessed 26 Jan 2012
- Gearon, Liam Francis (2019). The Routledge International Handbook of Universities, Security and Intelligence Studies. Routledge. p. 12. ISBN 978-1-35133-240-8.
- Lodge, Kane (7 October 2016). "Interview with Professor Quassim Cassam". The Freethink Tank. Retrieved 30 November 2019.
- "Quassim Cassam". warwick.ac.uk. University of Warwick. Retrieved 30 March 2021.
- "Archived copy" (PDF). Archived from the original (PDF) on 10 October 2012. Retrieved 18 October 2010.CS1 maint: archived copy as title (link)
- "Volume 99 Issue 2 | The Monist | Oxford Academic". Academic.oup.com. 1 April 2016. Retrieved 30 November 2019.