Vitruvius Quotes
Astronomers have a common ground for discussion with musicians in the harmony of the stars and musical concords in tetrads and triads of the fourth and the fifth, and with geometricians in the subject of vision; and in all other sciences many points, perhaps all, are common so far as the discussion of them is concerned. But the actual undertaking of works which are brought to perfection by the hand and its manipulation is the function of those who have been specially trained to deal with a single art.
Vitruvius. The Ten Books on Architecture. Translated by Morris Hicky Morgan, Harvard University Press, 1914, p. 11.
Marcus Vitruvius Pollio (/vɪˈtruːviəs ˈpɒlioʊ/; c. 80–70 BC – after c. 15 BC), commonly known as Vitruvius, was a Roman author, architect, and civil and military engineer during the 1st century BC, known for his multi-volume work entitled De architectura. He originated the idea that all buildings should have three attributes: firmitas, utilitas, and venustas ("strength", "utility", and "beauty"). These principles were later widely adopted in Roman architecture. His discussion of perfect proportion in architecture and the human body led to the famous Renaissance drawing of the Vitruvian Man by Leonardo da Vinci.