A touch of Roman today. Marcus Vitruvius Pollio (80–70 BC – after c. 15 BC), commonly known as Vitruvius, was a Roman author, architect, civil engineer, and military engineer during the 1st century BC, known for his multi-volume work entitled De architectura. His discussion of perfect proportion in architecture and the human body led to the famous Renaissance drawing by Leonardo da Vinci of Vitruvian Man. He was also the one who, in 40 BCE, invented the idea that all buildings should have three attributes: firmitas, utilitas, and venustas, meaning: strength, utility, and beauty. These principles were later adopted by the Romans. His only surviving work is 'De Architectura.'

De architectura (On architecture, published as Ten Books on Architecture) is a treatise on architecture, dedicated to his patron, the emperor Caesar Augustus, as a guide for building projects. 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. It contains a variety of information on Greek and Roman buildings, as well as prescriptions for the planning and design of military camps, cities, and structures both large (aqueducts, buildings, baths, harbours) and small (machines, measuring devices, instruments). Since Vitruvius published before the development of cross vaulting, domes, concrete, and other innovations associated with Imperial Roman architecture, his ten books are not regarded as a source of information on these hallmarks of Roman building design and technology.

A few paragraphs from Book 1 today.

“The building of temples relies on symmetry and architects need to most carefully understand the reason for this. It comes from proposition, which was called “analogy” in Greek. Proportion derives from fixed segments of the parts of the building and the whole—and the balance of symmetry is achieved through this. For no building can have an order in its design without symmetry and proportion, unless it has something like the precise design of a well-figured human body.  For nature has so composed the human body that the face from the chin to the top of the brow and the roots of the hair is one tenth of the whole and the palm of the hand from the wrist to the end of the middle finger is the same.

The head from the chin to the top is one eighth and the top of the chest where it meets the neck to the hair’s roots is a sixth. From the middle of the chest to the crown is one quarter of the whole. The third part of the length of the face extends from the bottom of the chin to the base of the nostrils. The nose from the nostril base to the space between the brows is the same. From that line to hair forms the forehead, a third part. The foot comprises a sixth of the body’s height and the chest is a quarter. The other limbs all have appropriate measures too. And ancient painters earned great praise by observing all these measures.

In the same way, the limbs of temples should have proportions of their various parts responding appropriately to the general size of the whole construction. Consider that the navel is the natural center of the body. For, if a person should lie on the ground with hands and feet spread wide and a circle has the navel as the center, fingers and toes will touch the line of the circumference. In addition, a square can be traced within the figure in the same way. For, if we take the measure from the sole to the top of the head and compare to measure to the distance from one hand to another, the lengths will be found equal, just like foundations squared with a rule. For this reason, if nature designed the body so that the parts correspond in their dimension to the whole design, then ancient people seem to have decided with good reason that they should keep in their works the exact proportions of the separate components to the design of the whole. Therefore, they have handed down orders in all of their works, especially in temples to the gods, the kinds of accomplishments whose excellence and weakness persist for generations.”