Part Ⅰ. Many-Body Systems and Classical Field Theory. 1. Classical and Quantum Mechanics of Particle Systems 1.1 Introduction 1.2 Classical Mechanics of Mass Points 1.3 Quantum Mechanics: The Harmonic Oscillator 1.4 The Linear Chain (Classical Treatment) 1.5 The Linear Chain (Quantum Treatment) 2. Classical Field Theory 2.1 Introductio 2.2 The Hamilton Formalism 2.3 Functional Derivatives 2.4 Conservation Laws in Classical Field Theories 2.5 The Generators of the Poincare Group Part Ⅱ. Canonical Quantization 3. Nonrelativistic Quantum Field Theory 3.1 Introduction 3.2 Quantization Rules for Bose Particles 3.3 Quantization Rules for Fermi Particles 4. Spin-0 Fields: The Klein-Gordon Equation 4.1 The Neutral Klein-Gordon Field 4.2 The Charged Klein-Gordon Field 4.3 Symmetry Transformations 4.4 The Invariant Commutaion Relations 4.5 The Scalar Feynman Propagetor 4.6 Supplement:The △Functions 5 Spin-1/2 Fields:The Dirac Equation 5.1 Introduction 5.2 Canonical Quantization of the Dirac Field …… 6 Spin-1 Fields:The Maxwell and Proca Equations 7 Quantization of the Photon Fields 8 Interacting Quantum Fields 9 The Reduction Formalism 10 Discrete Symmetry Transformations Part Ⅲ.Quantization with Path Integrals 11 The Path-Integral Method 12 Path Integrals in Field Theory Index