In this doctoral dissertation (2012) the effects of the monetization of the Greek world in the 5th and 4th century on conceptions of reciprocity in friendship are analyzed.

In my research, I focus on cooperation, social dilemmas, tacit coordination, uncertainty, sanctions and trust.

This interdisciplinary minor addresses sustainabilty challenges from a systems perspective, and investigates ways to sustain society within planetary boundaries.

The Austrian Studies Fund supports the Special Chair for Central European Studies, invites visiting professors from Austria and connects with Austria Centres over the world.

Didactics

Leiden Observatory is the astronomical institute of the Faculty of Science of Leiden University.

De opening of the Academic Year 2023-2024 took place on Monday 4 September 2023 in Pieterskerk church.

The opening of the Academic Year 2016-2017 took place on Monday 5 September 2016 in Pieterskerk church.

To strenghten ties with the public, press, other academics and wider society, LION employs an outreach officer.

Do you aspire to a national or international career in law? Then choose the master’s programme Law - European Law - at Leiden University: a broad and solid foundation for your career.

Do you aspire to a career in international law? Then consider the Regular LL.M. in Public International Law at Leiden University.

Our institute contributes to multiple curricula. 

Our institute contributes to multiple curricula. 

Many important discoveries have been made in Leiden, and the Leiden Discoveries route guides you through the city to find them. For example, it will take you to the lab of Nobel laureate Willem Einthoven, who was a professor of physiology. His most important invention, the electrocardiograph, is still…

By working together with external social partners, the knowledge of our scientists finds its way into society.

Fundamental knowledge generated through research increases our scientific and cultural knowledge and wealth, and offers an important basis for developing and innovating products and services, and for deciding how we should structure our society.

Coordination chemistry is the chemistry of metal atoms

Leiden University's Citizen Science Lab supports and organizes initiatives where anyone can get started with scientific data and research. This is how we enrich research with insights from the community, make science accessible to all, and tackle important local issues together.

Latin America and the Caribbean (LAC) is one of the three priority areas of Leiden University, which was established by its Executive Board in 2014. The objective is to set up a comprehensive strategy.

Contacts between Tocharian A and B and Khotanese and Tumshuqese, four languages once spoken in today’s Xīnjiāng Uyghur Autonomous Region in Northwest China, lack a comprehensive treatment and are still a controversial topic. This work contains the first systematic investigation of the matter from a…

We are grateful to the following sponsors of ISBA 2025

Find out all the possibilities and career opportunities that SBB can offer and read some experiences of SBB alumni during their internship or current positions.

Discover the outstanding researchers and educators recognised by our faculty. This page gives an overview of all prize winners.

The oldest university in the Netherlands has produced many well-known scientists. Some of them are known to the wider public; others are perhaps less well known, but their achievements are no less impressive.

By effectively integrating word-class scientific research in astronomy and excellent teacher education, you will become a professional astronomer with an internationally recognized MSc degree and teaching qualification.

A selection of news from Leiden University.

In 2019 Leiden University was 444 years old. This special birthday called for a special celebration. We celebrated this milestone with the residents of Leiden and The Hague. In, with and for these two cities.

Emeritus professor at the Natural Products Laboratory, Institute of Biology, Leiden University - the Netherlands

Maritime conflict management is the regulation of conflict in relation to the sea. It comprises conflict enforcement, conflict resolution and conflict avoidance. How did victims of maritime conflicts claim and obtain damages or demand compensation or reparation?

An important component of this master consists of extracurricular activities. Get the most out of your programme by taking part in our extracurricular activities.

One person can already make a difference, and if all students and academics were eco-friendly, the world would be a much more sustainable place. Plastic Soup Surfer Merijn Tinga opened the academic year in Leiden with this message.

As a venue, Leiden University is a fitting setting for recognising the outstanding achievements of the award winners and celebrating the inspiration that they bring as role models for encouraging a fairer society by motivating one individual at a time.

Crises like climate change and loss of biodiversity threaten our planet. That’s why sustainability is an important topic in research and education across Leiden University. On this website you read how scientists from many disciplines work together in researching sustainability.

How can child participation be defined, what is the importance of child participation and how can it be promoted?

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 World Cultural Council (WCC) and Leiden University are pleased to announce that the 34th Award Ceremony will take place on Wednesday 8 November 2017 in Leiden. This year Professor Omar M. Yaghi, the James and Neeltje Tretter Chair Professor of Chemistry, University of California-Berkeley, USA,…

The opening of the Academic Year 2019-2020 took place on Monday 2 September 2019 in Pieterskerk church.

The Leiden Institute for Brain and Cognition (LIBC) is a network that stimulates interdisciplinary exchange of knowledge and expertise on topics related to brain and cognition and focuses on science valorisation and outreach.

Archaeozoology is the study of faunal remains that are recovered at archaeological sites.

Didactics

During the opening of the academic year, true to tradition the LUC Teaching Prize will be awarded to the best lecture at the University. Get to know the nominees. This week: Christine Espin.

The Van Bergen Fund provides financial support to study associations of Leiden University for initiatives that promote contact between Dutch and international students. A good plan will receive a subsidy from the Van Bergen Fund.

By effectively integrating word-class scientific research and excellent education, you will become a professional astronomer with an internationally recognized degree.