Spending Thursday at the Faculty of Social and Beh… Spending Thursday at the Faculty of Social and Beh… Speech by the Ukrainian Foreign Minister Borys Tar… Speech by the Ukrainian Foreign Minister Borys Tar… Speech by the Ukrainian Foreign Minister Borys Tar… Window of the Groot Auditorium of Leiden Universit… Speech by the Ukrainian Foreign Minister Borys Tar… Speech by the Ukrainian Foreign Minister Borys Tar… Speech by the Ukrainian Foreign Minister Borys Tar… Speech by the Ukrainian Foreign Minister Borys Tar… Things on Rooftops: nr. 9 Pallas Athene Weatherva… Academy Building of Leiden University Debate about freedom of speech between prof. Afshi… Debate about freedom of speech between prof. Afshi… Debate about freedom of speech between prof. Afshi… Debate about freedom of speech between prof. Afshi… Debate about freedom of speech between prof. Afshi… Gevaarlijke vreemde spanning My day job: at a presentation of the new marketing… Edward O. Wilson delivering the Tinbergen Lecture… Edward O. Wilson delivering the Tinbergen Lecture… Edward O. Wilson delivering the Tinbergen Lecture… Edward O. Wilson delivering the Tinbergen Lecture… "Kom eruit, klootzak!" Silhouette of the Academy Building in Leiden, the… Science in action Rijksuniversiteitsmanege Academy Building of Leiden University just before… Academy Building of Leiden University just before… Academy Building of Leiden University just before… Academy Building of Leiden University just before… Academy Building of Leiden University just before… Solving our archive space problem at work: floodin… The Opening of the Academic Year of Leiden Univers… The Opening of the Academic Year of Leiden Univers… A friend of mine writes his name on the wall of th… A friend of mine received his master's degree toda… A professor with many honourary doctorates dies natalis of Leiden University A young man listening to the speeches These workers kindly posed for me Ode to the Stationsweg-46 building Ode to the Stationsweg-46 building Ode to the Stationsweg-46 building The Opening of the Academic Year The Leiden historical student fraternity "Robert F… The Leiden historical student fraternity "Robert F… More pictures of the retirement reception The reception was held at our Botanical Garden More pictures of the retirement reception The Leiden historical student fraternity "Robert F… More pictures of the retirement reception The Leiden historical student fraternity "Robert F… The new office Looking out from the Gorlaeus Laboratory of Leiden… 433rd dies natalis of Leiden University: after the… 433rd dies natalis of Leiden University: after the… 433rd dies natalis of Leiden University: student p… 433rd dies natalis of Leiden University: prof. Lou… 433rd dies natalis of Leiden University: the Beadl… 433rd dies natalis of Leiden University: windows o… 433rd dies natalis of Leiden University: retired p… 433rd dies natalis of Leiden University: student Spending Thursday at the Faculty of Social and Beh…