Answer a question about this article:
The earliest surviving written work on the subject of architecture is De architectura, by the Roman architect Vitruvius in the early 1st century AD. According to Vitruvius, a good building should satisfy the three principles of firmitas, utilitas, venustas, commonly known by the original translation firmness, commodity and delight. An equivalent in modern English would be:
What was Vitruvius' profession?
architect