Internationaal-Constantin-Brunner-Instituut

The collection comprises typescripts; reprints; clippings; articles; circulars; and correspondence pertaining to the philosopher Constantin Brunner and the circle of his followers worldwide. Of interest are three manuscripts by Brunner himself, as well as a series of manuscripts by other authors, written either during Brunner’s lifetime or as commemorations of Brunner’s anniversaries. In particular, there are articles by Ferdinand Alquié, Magdalena Kasch, Abraham Klein, Ernst Ludwig Pinner and others. In addition, there are reports and circulars of the ‘Internationaal Constantin Brunner Instituut’ (the International Constantin Brunner Society), as well as announcements for the publications of Brunner’s books and their reviews.

This collection documents the life of Eduard Rudnicki, also known as Eli Rottner, a follower and friend of Constantin Brunner. Throughout his life he was devoted to spread Brunner's and Spinoza's philosophy. This collection shows not only his personal and intellectual life, but exposes his relationship to Brunner, to the Brunner circle and the Internationaal Constantin Brunner Instituut in The Hague. Correspondence between Rudnicki and Brunner and several other known Brunnerians are included, as well as a large amount of manuscripts and newspaper clippings written by Rudnicki and others about and dedicated to Constantin Brunner and Baruch de Spinoza. There is also a photo collection of Rudnicki, Brunner and his circle to be found.

The Max Busyn collection centers on material about the German-Jewish philosopher Constantin Brunner and the circle of devotes around him. The collection consists primarily of essays and correspondence between several followers of Brunner, who tried to reactivate the circle and to republish Brunner's work in the 1950s and 1960s after the Nazis had destroyed it.

Correspondence of Constantin Brunner with various people.

Correspondence between Constantin Brunner, Lotte Brunner, Walter Bernard, and Yehudi Menuhin.