Logic.- A Notion of Mechanistic Theory.- Essai sur la Logique de L’indeterminisme et la Ramification de L’espace-Temps.- How to Think Quantum-Logically.- The Conditional in Quantum Logic.- Empirical Logic and Quantum Mechanics.- Some Results from the Combinatorial Approach to Quantum Logic.- Probability.- The Quantum Probability Calculus.- The Probability Structure of Quantum-Mechanical Systems.- Towards a Revised Probabilistic Basis for Quantum Mechanics.- Probability in a Discrete Model of Particles and Observations.- Superposition and Macroscopic Observation.- A Note on the So-Called Yes-No Experiments and the Foundations of Quantum Mechanics.- Completeness.- On the Completeness of Quantum Theory.- The Einstein-Podolsky-Rosen Paradox.- Stochastic Incompleteness of Quantum Mechanics.- Errors in the No Hidden Variable Proof of Kochen and Specker.- Operator-Observable Correspondence.- Randomness and Locality in Quantum Mechanics.- Fundamental Statistical Theories.- Why the World is a Quantum World.- On the Determinism of Hidden Variable Theories with Strict Correlation and Conditional Statistical Independence of Observables.