Marcus Vitruvius Pollio (c. 90-20 B.C.) - a Roman architect and military engineer who served both Julius Caesar and Caesar Augustus. We are grateful to him for his treatise, De Architectura, 10 books on architecture and engineering. He drew from his own experience, and that of other architects, to discuss town planning, building materials, temples, civic and private structures, pavement techniques, water supply, geometry, astronomy and machinery (both civil and military).
Source: Oxford Classical Dictionary, Oxford University Press, 1970 - J.Jahnige, June 1999