Quintilian's Institutio Oratoria is a comprehensive work on rhetoric and education written by the Roman rhetorician Quintilian in the late first century AD. This text serves as a foundational treatise on rhetorical theory, emphasizing the importance of effective communication in public life and education, while also outlining the stages of rhetorical training and the qualities of an ideal orator. Its influence extended beyond rhetoric to various fields, including law and political discourse, highlighting its significance in Roman contributions to science and technology.