- De Architectura, Book I: Chapter I, Paragraphs 1-3: "The architect should be equipped with knowledge of many branches of study and varied kinds..."
- De Architectura, Book I: Chapter II — The Fundamental Principles of Architecture: "1. Architecture depends on Order (in Greek τἁξις), Arrangement (in Greek διἁθεσις), Eurythmy, Symmetry, Propriety,..."
- De Architectura, Book II: Chapter II, Paragraph 1: "First of all Thales thought that water was the primordial substance of all things. Heraclitus..."
- De Architectura, Book V: Chapter V, Paragraph 7: "... all our public theatres made of wood [omnia publica lignea theatra] contain a great..."
- De Architectura, Book V: Chapter V, Paragraphs 1-3: Plan of the Theatre: "The plan of the theatre itself is to be constructed as follows. Having fixed upon..."
- De Architectura, Book IX: Chapter VI, Paragraph 3: "When we come to natural philosophy, however, Thales of Miletus, Anaxagoras of Clazomenae, Pythagoras of..."
- De Architectura, Book VII: Introduction, Paragraph 1: "Among the Seven Sages, Thales of Miletus pronounced for water as the primordial element in..."
- De Architectura, Book IX: Introduction, Paragraph 2: "What does it signify to mankind that Milo of Croton and other victors of his..."
Vitruvius was a Roman author, architect, and engineer during the 1st century BCE, best known for his multi-volume work entitled De Architectura. His writings were a central influence on the Renaissance and, in particular, on the Neoclassical style of architecture. His writings also had a strong impact on Renaissance mechanics, and are one of the most important sources of modern knowledge of Roman building methods as well as the planning and design of structures, both large (aqueducts, buildings, baths, harbours) and small (machines, measuring devices, instruments).