On 8 February 2021 Leiden University celebrated its 446th anniversary.

This critical edition covers the first two parts of De secundis intentionibus by Hervaeus Natalis (14th century).

On 8 February 2024 Leiden University celebrated its 449th anniversary.

Leiden University celebrated its 445th foundation day on 7 February 2020.

On 8 February 2023 Leiden Unversity celebrates its 448th foundation day.

Leiden University celebrated its 442nd foundation day on 8 February 2017.

On 8 February 2022 Leiden University celebrated its 447th anniversary.

Leiden University celebrated its 443th foundation day on 8 February 2018.

Leiden University celebrated its 444th foundation day on 8 February 2019.

Pieterskerk and Leiden University are closely connected. The University was founded in Pieterskerk and to this day we celebrate that at the University’s annual Dies Natalis. Much has to be done to get the church ready for this special day. A photo series behind the scenes.

On February 8 the 443rd dies natalis will take place in the Pieterskerk in Leiden.

In 2021 many of our students and staff won fantastic prizes and were awarded important research grants. This is our traditional review of these successes as the end of one year marks the beginning of another.

‘Collaboration is increasingly important,’ Rector Magnificus Carel Stolker said at the 445th Dies Natalis of Leiden University on 7 February. But, as he heard from a number of Leiden researchers, this is contingent upon a firm disciplinary basis. A novelty of this year’s celebration was a joint dies…

The student bi-weekly online diary of Archaeology/Egyptology students, 2021.

Universities cannot survive in this highly competitive world without collaboration. And the ultimate aim is to make the world a safer and more sustainable place. This was Rector Carel Stolker’s message during the 441st Dies Natalis.

‘We could share our knowledge more with others and apply it more widely,’ said Annetje Ottow, President of the Executive Board, while presenting the new Strategic Plan on the University’s 447th Dies Natalis. The new Strategic Plan therefore focuses on innovating and connecting, among disciplines and…

Leiden University College The Hague turns 7 today (29 September 2017). Lieke Schreel, educational director of LUC has been with the college from the start. She shares her thoughts on another year and birthday of the College.

On 8 February, GTGC's Chair prof.dr. Jan Aart Scholte, gave a speech during the high-level dinner of the university's 449th Dies Natalis. The speech was themed around 'including the other' in research and focussed on the value of inviting and engaging with perspectives different than your own.

How has evolution shaped our curiosity? And how does that curiosity ensure that we now have the technological ability to discover whether we are alone in the universe? This was all covered during the celebration of Leiden University’s 449th Dies Natalis.

An overview of awards and prizes granted to our staff and students in 2021, as well as special appointments at Leiden University and other institutions.

On September 29th LUC celebrated its 6th birthday. Lieke Schreel, the Educational Director of LUC has been involved with the programme from the start. She reflects on the growth and the development of LUC in those six years.

The importance of science communication and cross-boundary collaboration, and the ‘mantra’ of diminishing social cohesion in society: these all came up at Leiden University’s 448th Dies Natalis. A panel discussion including Leiden’s mayor Lenferink, music and two honorary doctorates completed the special…

We have purchased tickets for our students, staff and alumni to make a collective visit to the European Media Art Festival 2021. Read here how to obtain a ticket from us.

‘Collaboration is increasingly important,’ Rector Magnificus Carel Stolker said at the 445th Dies Natalis of Leiden University on 7 February. But, as he heard from a number of Leiden researchers, this is contingent upon a firm disciplinary basis. A novelty of this year’s celebration was a joint dies…

De opening of the Academic Year 2021-2022 took place on Monday 6 September 2021 in Pieterskerk church.

In this Yearbook you will find some fascinating examples of what was done in 2021, not only by ourselves, but also by our international colleagues.

No procession of professors, just a handful of people in the church and snowdrifts outside Leiden’s Pieterskerk: 8 February 2021 was no ordinary Dies Natalis. Carel Stolker transferred the rectorate to Hester Bijl, and Annetje Ottow became the new President of the Executive Board. With an honorary doctorate…

The opening of the Academic Year 2020-2021 took place on Monday 31 August 2020 in Pieterskerk church.

The 18th edition of SIP will be organised by Caroline Mueller at the University of Bielefeld, Germany. More information can be found on the SIP 2024 Homepage. The 17th Symposium on Insect-Plant relationships in Leiden has been held online from 25 to the 30 July 2021.

Historian Frank Dikötter will receive an honorary doctorate from Leiden University for his work on the history of the Chinese Republican period and the People's Republic of China under Mao. He will be awarded the honorary degree during the university's Dies Natalis celebrations on 8 February 2017.

The last decades it is increasingly recognized that acute as well as chronic postoperative pain is an important problem. Treatment and prevention of postoperative pain is a challenge, especially in special patient populations where there is only limited guidance on how to optimally use opioids.

Museums and collections are often frontpage news nowadays. The collections stored and curated in museums, universities and private institutions are no longer seen as 'neutral' entities to be enjoyed without political connotations.

Underneath you will find more information on how the university works.

University ceremony

Underneath you find more information on how our faculty works.

Every year around 8 February, Leiden University, the oldest university in the Netherlands, is celebrating its birthday. Why does the King still receive a telegram on the day of the Dies Natalis? 4 questions on the origins of Leiden University and its traditions for celebrating its foundation day.

Terrorism only poses a small risk to people but tends to be a major source of public fear. Through fear, terrorism has far-reaching implications for public governance.

At the Dies Natalis Willem Otterspeer, Professor Emeritus of University History, presented the fourth and final volume of Groepsportret met Dame, his series on the history of Leiden University. De 'Strategie van de Aanpassing' covers the period 1876-1975. Otterspeer talked about his book in a podcast…

University ceremony

Smartphone behaviors are so common but how does the brain generate this behavior? The Cognition in the digital environment laboratory (CODELAB) investigated the brain activity surrounding smartphone interactions with the help of Artificial Intelligence. According to their research, the brain fluidly…

If we want to solve global problems, we need to know about both the theory and the practice. How does the international community make decisions about military intervention, for instance? Why is it such a complex process? Professor Herman Schaper has represented the Netherlands at the United Nations…

From ransomware to Citrix traffic jams: over the past few months Dutch organisations were regularly brought to a standstill by serious cyber attacks. We can only face these threats by standing as one, and universities and government should take the lead. These are the words of Leiden professors Bibi…