The volume collects a series of art lectures that survey painting's technical principles, historical sources, and critical methods for students. The author traces instruction from ancient manuals to later theorists, weighing fragmentary evidence and assessing writers such as Pliny, Quintilian, and Cicero for reliability while comparing their accounts with practitioners like Leonardo and Dürer. Practical topics include composition, expression, chiaroscuro, glazing, and the rendering of form, set against reflections on style, chronology, and the limits of surviving texts. Interleaved notes adapt the lectures into guidance for study and artistic judgment.