Book excerpt: The proceedings of the Lake Louise Winter Institute for 1998 deal with strong interactions. This includes the jet physics and fragmentation functions as needed in high energy collider physics, deep inelastic scattering to study the structure functions of nucleons, and finally physics with the production and hadronization of quark-gluon plasma at Relativistic Heavy Ion Collider. Both the theoretical developments and experimental data were presented with the intent of establishing their relationship and finding new directions of study.