The document discusses the main aims and theories of sentencing in criminal law. It outlines five main purposes of sentencing according to statute: punishment, crime reduction through deterrence, reform and rehabilitation of offenders, protection of the public, and reparation. It then examines six main sentencing philosophies in more depth: retribution, deterrence, reform/rehabilitation, protection of the public, reparation, and denunciation. Specific examples are provided for each.