Vitruvius
Vitruvius ( vi-TROO-vee-əs; Latin: [wɪˈtruːwi.ʊs]; c. 80–70 BC – after c. 15 BC) was a Roman architect and engineer during the 1st century BC, known for his multi-volume work titled De architectura. As the only treatise on architecture to survive from antiquity, it has been regarded since the Renaissance as the first book on architectural theory, as well as a major source on the canon of classical architecture.