Laudation on Jan C.A. Boeyens: - A Holistic Scientist.- 1. Molecular Associations Determined from Free Energy Calculations.- 2. Molecular Modelling for Systems Containing Transition Metal Centres.- 3. Magnetic Anisotropy in Cyanide Complexes of First Row Transition Metal Ions.- 4. Structure and Function: Insights into Bioinorganic Systems from Molecular Mechanics Calculations.- 5. Artificial Photosynthetic Reaction Centre.- 6. Multifrequency EPR Spectroscopy: A Toolkit for the Characterization of Mono- and Dinuclear Metal Ion Centres in Complex Biological Systems.- 7. On Stacking.- 8. Structurally Complex Intermetallic Thermoelectrics - Examples from Modulated Rock-Salt Structures and the System Zn-Sb.- 9. Solid State Transformations in Crystalline Salts.- 10. Influence of Size and Shape on Inclusion Properties of Transition Metal-based Wheel-And-Axle Diols.