Chapter headings and selected papers: An Introduction. Why is particle physics high energy physics? Of Propagators and Pions. Virtual particles: annihilation and creation operators. Strangers in Town. Peculiarities of the weak interactions. Hadrons. Determination of hadron properties. Colour, Confinement and Strings. Chromomagnetism. Lepton Probes. Coulomb scattering and form factors. Golden Rules. Propagators and resonances. Fermions and the Dirac Equation. Fermions, antifermions and parity. Fermion-Fermion Interactions. Deep inelastic neutrino scattering. Probing the Nucleon. Weak neutral currents. SU(2) and Isopin. Charge conjugation and G parity. From SU(2) to SU(3) of colour: Chromodynamics of Hadrons. Chromomagnetism. Chromodynamics of Hadrons: Ground State Baryons and Isocalor Mesons. Isosinglet states, annihilation and flavour mixing. Massive Fermions. Chromomagnetic splitting in heavy quark systems. Weak Interactions of Quarks. The pattern of quark decay. The (un)Unified Electroweak Interaction. The Weinberg-Salam model-unexplained. Final remarks. Units. Glossary. Select Bibliography. Index.