Inner Simplicity vs. Outer Simplicity (E. Ghys) -- The Complexity of Simplicity: The Inner Structure of the Artistic Image (J. Pallasmaa) -- Thinking in Four Dimensions (D. McDuff) -- Kant, Co-Production, Actuality, and Pedestrian Space: Remarks on the Philosophical Writings of Fred Sandback (J. Kennedy) -- What Simplicity Is Not (M. Malliaris) -- Constructing the Simples (C. Franks) -- The Simplicity Postulate (M. Senechal) -- The Experience of Meaning (J. Zwicky) -- Math Currents in the Brain (M. Gromov) -- bc, becuz, because ASCII (K. Shepherd) -- "Abstract, Directly Experienced, Highly Simplified, and Self-Contained": Discourses of Simplification, Disorientation, and Process in the Arts (R. Stewen) -- Remarks on Simple Proofs (R. Iemhoff) -- The Fluidity of Simplicity (J. Floyd) -- "Mathematical Typography" (After Donald Knuth, 1978) (D. Sinister) -- Simplicity Via Complexity (A. Villaveces) -- On the Alleged Simplicity of Impure Proof (A. Arana) -- Minimalism and Foundations (S. Gerhardt) -- Economy of Thought: A Neglected Principle of Mathematics Education (A. Borovik) -- Simplicity is the Point (D. Sullivan) -- Appendix A: Simplicity, in Mathematics and in Art (A. Jackson) -- Appendix B: Conference Program -- Index.