'Spinoza’s Architectural Passages and Geometric Comportments’. In Lord, B. (ed.). Spinoza Beyond Philosophy, Edinburgh University Press, forthcoming, 2012. This chapter aims to examine the geometric concept of ‘passage’ generated out of Spinoza’s seventeenth-century text, the Ethics (1669), arguing that it is a physical and psychic architectural element. It considers this, and Spinoza's concept of difference which is developed out of his radical theories of 'Nature' and 'Substance' in relation to Robin Evans’ analysis of Raphael’s drawings for Villa Madama. The chapter develops an interdisciplinary construction of ‘passage’ from philosophy, architecture and fine art that contributes to current interdisciplinary interest in his work (cf. Braidotti, Conley, Lord, Mack, Selcer). It also extends Evans’ article ‘Figure, Doors and Passages’ by highlighting the geometric qualities of ‘passages’, and role of sex, nature and difference. The chapter was previously given as an invited talk at the AHRC Network Research Seminar, Spinoza and Texts in 2010: an interdisciplinary conference on Spinoza and the arts and humanities, Department of Philosophy, University of Dundee.