Are there general principles or values that should govern our actions as moral agents and/or as political subjects?

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 master's programme in Philosophy: Moral and Political Philosophy at Leiden University offers an excellent opportunity to explore fundamental issues in moral and political philosophy.

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.

PLATO considers learning its main theme and its main purpose.

Do humans have free will? Does the world look different than it really is? Can moral judgements be right or wrong? In the Dutch-taught Bachelor's programme Philosophy at Leiden University you will ask questions that cross different disciplines and you will study the theories of classical thinkers,…

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

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.

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

The 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. At Leiden University,…

The 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. At Leiden University,…

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

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…

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.

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.

The members of the Institute for Philosophy study all aspects of philosophy. In our research we seek a fruitful interaction between systematic and historical approaches to philosophy, and we thrive on intensive national and international collaboration.

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.

The master's programme in Modern European Philosophy at Leiden University focuses on the philosophical reflection on human nature and culture, both from a systematic and a historical perspective.

Many stimulating philosophical analyses have been written on contemporary technology; this book examines on the contrary how changes in contemporary technological environment have been reflected onto philosophy itself. The book shows how technological changes have marked a number of key concepts of…

Leiden University Centre for Intercultural Philosophy (LUCIP) is housed in the Institute for Philosophy at Leiden University.

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

The Centre for Political Philosophy (CPP) at Leiden University is an interdisciplinary platform for political thought. It aims to bring together all those with an active interest in the field from different institutes, branches and fields of study at Leiden University.

Are you thinking about studying Philosophy (60 EC)? Learn more and watch the introduction video.

Are you thinking about studying Philosophy (120 EC)? Learn more and watch the introduction video.

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

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 Global and Comparative Philosophy master’s programme is unique in Europe. It offers comparative perspectives from around the world that will enable you to be part of the next generation of thinkers: someone studying and shaping philosophy for a globalised 21st century.

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?

This master’s programme combines advanced levels of philosophical analysis with the study of non-Western sources, in particular Chinese, Indian, and Arabic sources.

The Leiden Centre for Continental Philosophy (LCCP) is a research community based at the Institute for Philosophy at Leiden University. LCCP is envisaged as an open space for stimulating discussion, critical debate and inventive co-operation in the local and international philosophical community. We…

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.

Cody Bahir defended his thesis on 1 June 2017.

While Nietzsche's works and ideas are relevant across the many branches of philosophy, the themes of contest and conflict have been mostly overlooked. Conflict and Contest in Nietzsche's Philosophy redresses this situation, arguing for the importance of these issues throughout Nietzsche's work.

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 centre brings together the research of the members of the Institute of Philosophy and affiliated academics whose work focuses on the history of philosophy broadly conceived. Research interests range from ancient to near-contemporary philosophy in various regions of the world, and cover all subdisciplines…

This Philosophy: Global and Comparative Perspectives bachelor's programme is unique. It offers comparative perspectives from around the world that will enable you to be part of the next generation of thinkers, someone studying and shaping philosophy for a globalised 21st century.

Assesses the importance of Merleau-Ponty to current and ongoing concerns in contemporary philosophy.

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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…

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…

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?

The Institute for Philosophy at Leiden University is host to the NWO programme,

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This dissertation offers a reconstruction of the propositional contents of the writings of Karl Popper, Leo Strauss, and Hannah Arendt while bringing these into discussion with their performative meanings, such as polemical forms of reasoning, analogical and metaphorical uses of language, and hidden…

In this dissertation I argue that the proto-daoist text the Zhuangzi and the ethical relation of Levinas are fruitful resources to reconsider the self-other relation in comparative philosophy.

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.