Prof. Dr. Johan Olsthoorn - Humboldt-Fellow

‘Grotius on the ‘infinite right’ to kill in defence of one’s life and goods’
? ?Conference on Hugo Grotius, Leiden Univ., June 19-20, 2025

‘Rights-forfeiture, punishment, and war’
? ?* Conference in honour of A. John Simmons, Chicago, May 14-18, 2025

‘Justifications of human bondage in antislavery writings: the case of Cugoano’
? ?* Conference at Folger Shakespeare Library, Washington D.C., Feb. 12-14,
? ? ??2026
? ?* Research seminar in the history of philosophy, Univ. of Jyv?skyl?, April 30,?
? ? ??2025

‘Natural rights, human rights, and punishment’
? ?# Conference on human rights, Univ. of Regensburg, Feb. 10-12, 2025

‘Paternalistic justifications for imperial rule, from Aristotle to Bentham’
? ?* Workshop at Centre Bentham, Sciences Po Paris, June 24-25, 2024

‘Racial natural slavery in Grotius’s just war theory’
? ?Grotius workshop, Univ. of Amsterdam, Dept. of Law, June 7, 2024

‘After abolition: Cugoano on ‘lawful servitude’ and the injustice of slavery’ [published]
? ?* Workshop on human rights in colonial contexts, Lund Univ., June 11-12,
? ? ??2024
? ?* Political theory seminar, King’s College London, Nov. 22, 2023
? ?* Conference on slavery in early modern philosophy, Boston Univ.,
? ? ??Nov. 11-12, 2023
? ?- OZSW conference, Leiden Univ., June 2-3, 2023

‘Locke on natural law and natural rights’ [published]
? ?* Annual meeting of the Locke Working Group, NYU, May 18-19, 2023

‘The problem of penal slavery in Quobna Ottobah Cugoano’s abolitionism’ [published]
? ?* NY/NJ early modern philosophy seminar, CUNY, May 17, 2023
? ?* Early modern philosophy seminar, Utrecht Univ., Sept. 22, 2022
? ?- Rethinking the narratives of early modern phil., U. Copenhagen,
? ? ??Sept. 14-16, 2022

‘Infinite right: proportionality and liability in early modern ethics of war’ [published]
? ?* Philosophy seminar, Stellenbosch Univ., August 18, 2022
? ?* Philosophy seminar, Univ. of Cape Town, August 3, 2022

‘Hobbes on justice’ [published]
? ?* Hobbes research seminar, Sorbonne, Paris, June 2, 2026
? ?* Author-meets-critics, Helsinki Collegium for Advanced Studies,
? ? ??April 28, 2025
? ?* Philosophy seminar, Univ. of Valladolid, March 21, 2025
? ?# Dutch Seminar in Early Modern Philosophy VIII, Univ. Groningen,
? ? ??June 23-24, 2022

‘Human rights and the ethics of compulsory prison labour’
? ?- ECPR conference, Univ. College Dublin, August 12-15, 2024
? ?* Online workshop ‘Facts, concepts, values and norms’, Univ. of Bucharest,
? ? ??June 7, 2022
? ?* Legal philosophy seminar, dept. of law, Univ. of Amsterdam,
? ? ??March 15, 2022

‘Hobbes on injustice, injury, and rights’ [published]
? ?Third Biennial European Hobbes Society Conference, Dubrovnik,
? ?Nov. 18-20, 2021

‘The right to wage private wars of subsistence’ [published]
? ?* Workshop on the public uses of coercion and force, Univ. of Amsterdam,
? ? ??June 7, 2019

‘Enforcing global justice: war, necessity, and remedial rights of the global poor’ [published]
? ?Yaoundé PhD seminar, Catholic Univ. of Central Africa, Cameroon,
? ?Aug. 20-25, 2018

‘Self-ownership and despotism: Locke on property in the person, divine dominium of human life, and rights-forfeiture’ [published]
? ?* Workshop on the problem of self-ownership, London, May 24-27, 2018
? ?* PSA politics of property workshop, Univ. of Nottingham, March 23, 2018

‘Moral standing, liability, and rights to wage wars of national defence’
? ?* Research seminar in practical philosophy, Univ. of Oslo, Oct. 27, 2020
? ?* Workshop on the morality of war, Univ. of Nijmegen, Nov. 18, 2019
? ?* Law and philosophy research seminar, Univ. Pompeu Fabra, Barcelona,
? ? ??Feb. 6, 2018
? ?* Conference on the ethics of war, Univ. of Amsterdam, Feb. 1-2, 2018
? ?- UCSIA workshop on pacifism, Univ. of Antwerp, Dec. 6-8, 2017

‘Leviathan Inc.: Hobbes on the nature and person of the commonwealth’ [published]
? ?* Conference on political philosophy, Jilin Univ., P.R. China,
? ? ??June 15-16, 2019
? ?* Early career workshop in history of political thought, York Univ.,
? ? ??June 14-15, 2018
? ?* EUI European Hobbes Society workshop, Firenze, April 27-28, 2017

‘‘This man is my property’: slavery and political absolutism in Locke and the classical social contract tradition’ (with L. van Apeldoorn) [published]
? ?* Legal and political theory seminar, EUI, Firenze, Jan. 28, 2019
? ?- British Society for the History of Philosophy conference, U. Sheffield,
? ? ? April 6-8, 2017
? ?- Early career workshop in the history of political thought, KU Leuven,
? ? ??Feb. 20-21, 2017

‘Hobbes on the rights of war’ [published]
? ?# Conference ‘Roman Justice and its Reception’, Swiss Institute Rome,
? ? ??Nov. 11-12, 2021
? ?- European Hobbes Society workshop, Univ. of Amsterdam, Nov. 20, 2019
? ?- International Society for Intellectual History conference, St Andrews,
? ? ??June 10-13, 2018
? ?* Early career seminar in history of political thought, Univ. of London,
? ? ??March 1, 2017
? ?* Law seminar, Univ. of Erlangen-Nürnberg, Nov. 14, 2016

‘Two ways of theorizing collective ownership of the Earth’ [published]
? ?* ECPR, Prague, Sept. 7-10, 2016
? ?* Property rights workshop, NUS Singapore, July 25-27, 2016

‘The theocratic Leviathan: Hobbes’s arguments for the identity of church and state’ [published]
? ?- Renaissance Society of America conference, Boston, March 31-April 2, 2016
? ?* Research colloquium on early modern political thought, UC Berkeley,
? ? ??Feb. 8, 2016

‘Conceptual analysis’ [published]
? ?* ECPR, Prague, Sept. 7-10, 2016
? ?* Research seminar in political philosophy, KU Leuven, Dec. 8, 2015

‘Francisco Suárez and Hugo Grotius on distributive justice and imperfect rights’ [published]
? ?* Conference on Suárez’s legal and political thought, Bruges,
? ? ??Nov. 24-25, 2017
? ?* ‘Rights at the Margins’ conference, Univ. of Helsinki, August 8-9, 2015

‘Conceptual foundations of Locke’s theory of original appropriation’ [published]
? ?* Annual meeting of the Locke Working Group, KCL, June 18, 2021
? ?* Workshop on legitimacy and property, Univ. of Cambridge,
? ? ??June 23, 2015
? ?* LSE political theory seminar, LSE, June 11, 2015
? ?- Politics of property workshop, Univ. of Nottingham, April 9-10, 2015

‘Egoism in Hobbes’s psychology and ethics’ (with L. van Apeldoorn)
? ?OZSW Conference 2014, Radboud Univ. Nijmegen, Nov. 7-8, 2014

‘Grotius on natural law and supererogation’ [published]
? ?* History of political thought seminar, Univ. of Cambridge, Feb. 27, 2017
? ?- Conference on natural law in C.16th -17th, CEU, Budapest,
? ? ??Nov. 10-12, 2016
? ?- 5th North Sea Seminar in Early Modern Philosophy, St Andrews,
? ? ??Oct. 10-11, 2014

‘Bernard Mandeville on unnatural virtue’
? ?Symposium on Mandeville, KNIR/American Univ. of Rome, Sept. 4-6, 2014

‘Thomas Hobbes: justice without rights’ [published]
? ?* Princeton, Dept. of Politics, Dec. 2, 2014
? ?* LSE, Dept. of Government, June 9, 2014

‘Hobbes’s attempts to de-moralize the domain of justice of actions’ [published]
? ?5th Meeting of the European Hobbes Society, King’s College London,
? ?Feb. 20-21, 2014

‘The labour theory of property as a principle of distributive justice’
? ?- Politicologenetmaal, Univ. of Maastricht, June 12-13, 2014
? ?* PhD seminar at King’s College London, Dep. of Political Economy,
? ? ??Feb. 19, 2014

‘Positivism and the separation of justice and morals in Hobbes’s legal philosophy’ [published]
? ?* LSE Forum in Legal and Political Theory, LSE, Feb. 11, 2015
? ?- XXVI World Congress of Philosophy of Law, Belo Horizonte,
? ? ??July 21-27, 2013

‘Hobbes on natural equality: a critique’
? ?OZSW annual conference, Erasmus Univ. Rotterdam, Nov. 15-16, 2013

‘On the absence of moral goodness in Hobbes’s ethics’ [published]
? ?* Univ. of Adolfo Ibá?ez, Santiago, Chile, July 31-Aug. 1, 2019
? ?* Ghent University, Sarton Centre for History of Science, Dec. 10, 2015
? ?- Mainz Seminar in Early Modern Philosophy, Univ. of Mainz,
? ? ??Nov. 21-23, 2013
? ?- 4th meeting of the European Hobbes Society, KU Leuven,
? ? ??March 26-27, 2013

‘The problem of spurious replies in early modern polemics’
? ?European Society for Early Modern Philosophy, Univ. de Grenoble,
? ?Jan. 30-Feb. 1, 2013

‘Spinoza on human and divine justice’ [published]
? ?* Author-meets-critics with Susan James, Univ. of Ghent,
? ? ??Dec. 13-14, 2012

‘Why Hobbes did not hold that every civil law is just’ [published]
? ?* Symposium on Hobbes, King’s College London, Nov. 15, 2012

‘Hobbes on justice, property rights and self-ownership’ [published]
? ?* 2nd meeting of the European Hobbes Society, King’s College London,
? ? ??May 16-17, 2012
? ?- Graduate conference in the history of political thought, QMUL,
? ? ??May 14-15, 2012

‘Hobbes on traitors, rebels and enemies’ [published]
? ?# Graduate conference on treason and betrayal, Univ. of Groningen,
? ? ??June 30, 2025
? ?- European Society for the History of Political Thought, U. of Athens,
? ? ??Jan. 19-21, 2012

‘The matter of duty: what is wrong and who is wronged in Hobbes’s ethics’ [published]
? ?* Workshop on Hobbes and the Enlightenment, Univ. of Marburg,
? ? ??Dec. 9-10, 2011

‘Why justice and injustice have no place outside the Hobbesian state’ [published]
? ?- Harvard Graduate Conference in Political Theory, Harvard,
? ? ??October 19-20, 2013
? ?* Intellectual History Seminar, Queen Mary, Univ. of London,
? ? ??December 5, 2012
? ?- MANCEPT Workshops in Political Theory, Manchester,
? ? ??Aug. 31-Sept. 2, 2011
? ?- Politicologenetmaal, Univ. of Amsterdam, June 18, 2011

‘Worse than death: the foundations of Hobbes’s moral philosophy’ [published]
? ?- European Hobbes Society meeting, Univ. of Amsterdam, Dec. 15-16, 2012
? ?- APA Pacific Division, San Diego, April 20-24, 2011

‘Hobbes’s account of distributive justice as equity’ [published]
? ?- 7th Annual Pol. Theory Workshop, Manchester Metropolitan Univ.,
? ? ??Sept. 1-3, 2010
? ?- Grad. conference in early modern philosophy, Univ. of Bucharest,
? ? ??May 19-20, 2010

‘Real good, death, and the laws of nature: re-examining Thomas Hobbes’s meta-ethics’
? ?6th Annual Political Theory Workshop, Manchester Metropolitan Univ.,
? ?Sept. 2-4, 2009