- Karl Widerquist, 2023. The Problem of Property: Taking the Freedom of Nonowners Seriously, Palgrave MacMillan (138 pages)
- Karl Widerquist and Grant S McCall, 2021, “The State of Nature, Prehistory, and Mythmaking,” in Anne Peters and Mark Somos (editors), The State of Nature: Histories of an Idea, Brill Publishers, 2021
- Karl Widerquist and Grant S. McCall, 2021. The Prehistory of Private Property: Implications for Modern Political Theory, Edinburgh: Edinburgh University Press (317 pages)
- Jean-Fabien Spitz, Hillel Steiner, Philippe Van Parijs and Karl Widerquist, 2019, “Why Private Property?” Raisons Politiques 73 (1), 119-131
- Karl Widerquist, 2019, “The Pursuit of Accord: Toward a Theory of Justice With a Second-Best Approach to the Insider-Outsider Problem,” Raisons Politiques 73 (1), 61-82
- Karl Widerquist and Grant McCall, 2017. Prehistoric Myths in Modern Political Philosophy, Edinburgh: Edinburgh University Press (274 pages)
- Widerquist and McCall, 2017. Free Online Appendix to Prehistoric Myths in Modern Political Philosophy, Edinburgh University Press (70 pages)
- Karl Widerquist and Grant S. McCall, 2015. “Myths about the State of Nature and the Reality of Stateless Societies.” Analyse & Kritik 37 (2), August, 233-257
- Karl Widerquist, March 2013. Independence, Propertylessness, and Basic Income: A Theory of Freedom as the Power to Say No. New York: Palgrave Macmillan (241 pages)
- Status Freedom. PowerPoint presentation by Karl Widerquist. Set to music by Robin Ketelaars. Robin Ketelaars YouTube Channel, September 21, 2012
- Karl Widerquist, 2010. “Review of In Our Hands: A Plan to Replace the Welfare State, Charles Murray,” Review of Political Economy 22 (1): 170-174
- Karl Widerquist, 2010. “The Physical Basis of Voluntary Trade,” Human Rights Review 11 (1): 83-103
- Karl Widerquist, 2010. “Lockean Theories of Property: Justifications for Unilateral Appropriation,” Public Reason 2 (3): 3-26
- Karl Widerquist, 2009. “A Dilemma for Libertarianism,” Politics, Philosophy, and Economics 8 (1): 43-72
- Karl Widerquist, 2009. “Libertarianism,” in the International Encyclopedia of Public Policy: Governance in a Global Age, Volume 3, Phillip O’Hara (Ed.) Perth: GPERU, pp. 338-350
- Karl Widerquist “Viewpoint: What Does the Stone Age Have to Do With Us?” Citizens Income Newsletter, Issue 3, 2008
- Karl Widerquist, 2006. Property and the Power to Say No: A Freedom-Based Argument For Basic Income, the University of Oxford (341 pages), (Later revised, extended, and published as two books, Independence, Propertylessness, and Basic Income and The Problem of Property)
- Karl Widerquist, 2004. “Review of Real Libertarianism Assessed, Andrew Reeve and Andrew Williams (eds.),” the Citizens Income Newsletter (1)
Audio-Video
Links to Audio-Video
- Low-Income People in the United States Are Working Too Much. Interview of Karl Widerquist by Sathvik Vasam and Zachary Weaver. UBI Builders: Peer-to-Peer Unconditional Income YouTube Channel, recorded Summer 2023, posted Sep 25, 2023
- Should we have a voluntary or a mandatory participation economy? By Karl Widerquist in Work, Participation and UBI (with Alina Plitman, Milena Kowalska, and James Mulvale). Chaired by Greg Marston. Recorded at the Basic Income Earth Network Congress, September 28, 2022, posted November 16, 2022
- Karl Widerquist, “Ethics of UBI, video 1: Prehistoric Myths in Modern Political Philosophy. By Karl Widerquist, Karl Widerquist’s Research (YouTube Channel), Recorded 14 January 2022, posted 15 January 2022
- Universal Basic Income and Property Rights. Interview of Karl Widerquist by Sam Barton. Talk of Today Podcast. YouTube, Aug 6, 2021
- Dan Schneider Video Interview #312 (video). Interview of Karl Widerquist by Dan Schneider, Cosmoetica, YouTube, May 19, 2021 (video)
- Can Leftists Speak of Liberty? Fair Go Australian Basic Income Discussion Group, post May 30, 2021 (video excerpt 3:38)
- The Prehistory of Private Property (video 49:00). By Karl Widerquist, Session 8: Why Private Property? II Conference, Centre de théorie politique, June 25, 2021
- “The Prehistory Of Private Property with Karl Widerquist.” Interview by Austin Mackell. Fair Go – Australian Basic Income Discussion Group, April 7, 2021
- Supporting People, the Environment, UBI (video interview). By Blair Walsingham (host) and Karl Widerquist (interviewee), Its Your Vote (Episode 6), Blair For Congress, YouTube, August 21, 2020
- ‘The Prehistory of Private Property’: Karl Widerquist introduces his new book with Grant McCall (video). By Karl Widerquist, Worldwide 9th Meeting of UBI Advocates and UBI Networks, YouTube, Recorded June 9th, 2020. First broadcast: June 14th 2020
- Karl Widerquist on Private Property (video), By Karl Widerquist (speaker) and Alex Howlett (host) video lecture about “Justice as the Pursuit of Accord,” Boston Basic Income #98, Hosted by Alex Howlett, Apr 15, 2020
- Dan Schneider Video Interview #265: Prehistoric Myths in Modern Political Philosophy. By Dan Schneider (host) interviewing Karl Widerquist, Cosmoetica, May 23, 2019
- The Power to Say No and American Social Policy, lecture with questions and answers by Karl Widerquist, delivered at Florida State University’s College of Social Work conference, “Poverty in America: Critical Perspectives on Causes, Effects and Possible Solutions,” March 1, 2019
- Elms College Humanities Lecture: “Freedom, Basic Income, and the Abolition of Poverty”. By Karl Widerquist, ElmsCollegeVideo, YouTube, posted November 18, 2019 (recorded October 28, 2019)
- Interview with Karl Widerquist, questions by Victor Mardellat and Télémaque Masson, Canal-U.TV(Paris), June 18, 2018. (Language: English)
- Prehistoric Myths in Modern Political Philosophy, lecture by Karl Widerquist, at the University of Paris, June 18, 2018 (Language: English)