Namque omnes homines, non solum architecti, quod est bonum, possunt probare, sed inter idiotas et eos hoc est discrimen, quod idiota, nisi factum viderit, non potest scire, quid sit futurum, architectus autem, simul animo constituerit, antequam inceperit, et venustate et usu et decore quale sit futurum, habet definitum.
For all men, and not only architects, can approve what is good. But there is this difference between the architect and the layman, that the layman cannot understand what is in hand unless he sees it already done; the architect, when once he has formed his plan, has a definite idea how it will turn out in respect to grace, convenience, and propriety.
final_alignments\Vitruvius_Architecture_Book_6.json