Foreword.- Translation of Walter Noll’s “Derivation of the Fundamental Equations of Continuum Thermodynamics from Statistical Mechanics”.- Thoughts on the Concept of Stress.- On Molecular Modelling and Continuum Concepts.- A Unified Interpretation of Stress in Molecular Systems.- On (Andersen–)Parrinello–Rahman Molecular Dynamics, the Related Metadynamics, and the Use of the Cauchy–Born Rule.