The difference between "machines" and "engines" is obviously this, that machines need more workmen and greater power to make them take effect, as for instance ballistae and the beams of presses. Engines, on the other hand, accomplish their purpose at the intelligent touch of a single workman...
Marcus Vitruvius PollioA liberal education forms a single body. Those, therefore, who from tender years receive instruction in the various forms of learning, recognize the same stamp on all the arts, and an intercourse between all studies, and so they more readily comprehend them all.
Marcus Vitruvius PollioAll machinery is derived from nature, and is founded on the teaching and instruction of the revolution of the firmament.
Marcus Vitruvius PollioNothing requires the architect's care more than the due proportions of buildings.
Marcus Vitruvius Pollio