Vitruvius

"Music, also, the architect ought to understand so that he may have knowledge of the canonical and mathematical theory, and besides be able to tune ballistae, catapultae, and scorpiones to the proper k…"

"Arrangement includes the putting of things in their proper places and the elegance of effect which is due to adjustments appropriate to the character of the work. Its forms of expression are these: gr…"

"The elm and the ash... when put in shape for use in buildings... are tough and having no stiffness... soon bend. But when they become dry with age, or are allowed to lose their sap... they get harder,…"

"The architect should be equipped with knowledge of many branches of study and varied kinds of learning, for it is by his judgement that all work done by the other arts is put to test. This knowledge i…"

"Hence, as the line of sight to the upper part is the longer, it makes that part look as if it were leaning back. But when the members are inclined to the front, as described above, they will seem the …"

"It was left by Aristoxenus, who with great ability and labour classified and arranged in it the different modes. In accordance with it, and by giving heed to these theories, one can easily bring a the…"

"When it appears that a work has been carried out sumptuously, the owner will be the person to be praised for the great outlay which ha has authorized; when delicately, the master workmen will be appro…"

"The hornbeam... is not a wood that breaks easily and is very convenient to handle. Hence the Greeks call it "zygia," because they make of it yokes for their draught animals... Cypress and pine are als…"