The master's programme in Philosophy of Knowledge at Leiden University is your opportunity to investigate the connections between philosophy and science in historical perspective.

In what way is constructivist logic able to account for both the role of the judging agent in inference and the universal claims of logical validity?

Neil Young and Philosophy, edited by Douglas L. Berger, explores the meanings, importance, and philosophical dimensions of the music, career, and life of this prolific singer/songwriter over the past five decades.

In this thesis the most dominant academic perspectives pertaining to the relationship between myth and philosophy are questioned and repositioned and Plato’s use of myth is analyzed to demonstrate this reevaluation.

This dissertation explores Aristotle’s use of teleology as a principle of explanation, especially as it is used in the natural treatises.

The master's programme in Philosophy of Humanities at Leiden University allows you to specialise in conceptual and methodological issues in the Humanities.

Philosophy of law is concerned with the the foundations of law.

This dissertation is a study of the view of the Neoplatonist Proclus (Athens, 411-485) on to what extent and how the changing and unreliable world of sense perception can itself be an object of scientific knowledge.

This project aims to situate the current policy concept of ‘valorization of scientific knowledge’ in historical and epistemological perspectives. Conceptual understanding of the utility of scientific practices is developed in dialogue with historical analyses of the politics of knowledge in European…

This doctoral thesis comprises four studies on the content and structure of physics teachers’ belief systems about teaching and learning physics in secondary education in the Netherlands.

Research at the Leiden Institute of Physics (LION) is foundational and curiosity driven. All our scientists share a desire to increase the knowledge of the world around us, in an open atmosphere of inquiry from which innovative ideas emerge that provide applications and value for society.

Physicists at the Leiden Institute of Physics (LION) conduct fundamental research into physical phenomena. They are inspired by curiosity and the desire to know more about the world in which we live. This research has always paved the way for new practical applications. These are something that the…

This project studies the theory and practice of moral education in the (Neo)Platonic tradition.

If you want to maintain a valid penal system, you have to continue to ask the big questions on punishment. Why do we punish people? What is permissible for the government and what is not? Philosopher of Law Jeroen ten Voorde examines these kinds of questions and keeps his academic colleagues and the…

How can party bans be justified? Which parties were banned in post-war Europe – and why? Do militant democracy instruments work? Is an international militant democracy concept in the making?

This master’s programme introduces the student to philosophical issues arising at the intersection of law, politics, and policy. This master’s programme is meant for students who wish to combine a master’s in Law, Political Science, Public Administration, or an adjacent discipline with a master’s in…

Law, Institute of Public Law, Europa Institute

Nature and History, Towards a Hermeneutic Philospohy of Historiography of Science

The Leiden Centre for Theoretical Philosophy (LCTP) is a platform for analytic philosophy in a broad sense at Leiden University. Its members do research in philosophy of science, philosophy of logic and metaphysics, with a keen interest in the history of topics such as mind, knowledge, truth, and ti…

While self-driving cars and autonomous weapon systems have received a great deal of attention in media and research, the general requirements of ethical life in today’s digitalizing reality have not been made sufficiently visible and evaluable.

Considering the ways in which the ‘global turn’ is changing the theory and practice of historical disciplines, Explorations in History and Globalization engages with the concept and methodology of globalization, challenging traditional divisions of space and time to offer a range of perspectives on…

This research revolves around the philosophical and linguistic elements that naturally belong to the process of learning music scores, including complex contemporary repertoire distinguished by physically decoupled notations or physical polyphonic notations.

This research project focuses on the thoughts of ethnicity and political orthodoxy in Medieval China by investigating Wang Tong’s works.

Kazimierz Twardowski (1866-1938) is the founder of the Lvov-Warsaw School with its strong tradition in logic and its scientific approach to philosophy. Twardowski’s unique way of doing philosophy, his method, is of central importance for understanding his impact as a teacher.

In this dissertation, Boethius’ mathematics and logic and their roles in philosophy are reassessed, and on the basis of these, the connections between mathematics and logic in Boethius and their applications to theological or philosophical topics are explored.

The philosophers at the Institute for Philosophy develop new perspectives and insights not only on topical themes such as immigration and climate change, but also on more fundamental philosophical questions.

The two-year master’s programme in Philosophy at Leiden University investigates the fundamental principles underpinning human knowledge while cultivating your capacity for reason and sound argumentation.

Research in the History and International Studies 1900-present specialisation addresses the interconnectedness and interdependence of contemporary global political, economic and cultural developments from a multidisciplinary perspective which is rooted in the humanities.

The Europaeum programme: European History and Civilisation is a unique one-year master’s programme offered by Leiden University, Université Paris I – Panthéon/Sorbonne and the University of Oxford.

Research in the History and International Studies 1900-present specialisation addresses the interconnectedness and interdependence of contemporary global political, economic and cultural developments from a multidisciplinary perspective which is rooted in the humanities.

A comprehensive analysis of Nietzsche's conception of conflict and the way in which relations of struggle condition the organisation of complex systems (with a specific focus on the human psyche and the body politic).

This thesis attempts to establish a dialogue between the modern and the medieval traditions in logic, by means of ‘translations’ of the medieval logical theories into the modern framework of symbolic logic, i.e. formalizations.

The Leiden Centre for Continental Philosophy (LCCP) is a research community based at the Institute for Philosophy of Leiden University, devoted to research in all areas of continental philosophy. LCCP is envisaged as an open space for stimulating discussion, critical debate and inventive co-operation…

The one-year master's programme in Philosophy at Leiden University integrates historical and systematic approaches in philosophy. It offers an advanced training in philosophical methodologies and skills, as well as a sophisticated knowledge of traditional and recent philosophical developments.

This work analyzes ritual practices and knowledge related to the Mesoamerican calendar with the aim of contributing to the understanding of the use and conceptualization of this calendar system in the contemporary K’iche’ community of Momostenango, in the Highlands of Guatemala.

Inaugural Lecture

Quantifying physical activity (using accelerometers) and combining the frequency and intensity of activities with health data (brain MRI, traditional clinical parameters and metabolomics) is of utmost importance to monitor mobility and health among older individuals and study health promotion during…

The master’s programme Physics at Leiden University offers a wide range of specialisations from theoretical research to cosmology. You will be trained for a career in research or for a more practical-oriented specialisation. The programme offers a wide choice of individual study paths that take into…

PLATO considers learning its main theme and its main purpose.