On the Impossibility of Detecting Uniform Motion -- Exploring the Internal Logic of Galileo’s Principle of Relativity -- Relativity in Euclidean Space and in Spacetime -- Relativity and the Dimensionality of the World: Spacetime Is Real -- Quantum Mechanics and the Nature of Spacetime -- The Nature of Spacetime and Validity of Scientific Theories -- Propagation of Light in Non-Inertial Refere…