Andrew Cooksy’s clear teaching voice help students connect immediately with the subject matter while defusing some of their initial trepidation about physical chemistry. Through lively narrative and meticulous explanations of mathematical derivations, Physical Chemistry: Quantum Chemistry and Molecular Interactions engages students while fostering a sincere appreciation for the interrelationship between the theoretical and mathematical reasoning that underlies the study of physical chemistry. The author’s engaging presentation style and careful explanations make even the most sophisticated concepts and mathematical details clear and comprehensible. Flexible organization accommodates the content needs and teaching styles of each semester/quarter sequence. Separation of Quantum Chemistry and Thermodynamics into distinct volumes provides the utmost in flexibility, allowing instructors to lead with their choice of Quantum-first or Thermo-first coverage.