1. An Appreciation of James Serrin.- 2. On Keplerian N-Body Type Problems.- 3. Invariance and Balance in Continuum Mechanics.- 4. Entropy Numbers, Approximation Numbers, and Embeddings.- 5. Some Regularity Properties of Locally Weakly Invertible Maps.- 6. Some Recent Results on Saint-Venant’s Principle.- 7. Some Results on Modifications of Three-Dimensional Navier—Stokes Equations.- 8. An Integral Equation in Probability.- 9. Self-Similar Solutions of the Second Kind.- 10. On the Problem of a Moving Contact Angle.- 11. Space, Time, and Energy: Lectio Doctoralis.