“Pytheos made a mistake by not observing that the arts are each composed of two things, the actual work and the theory of it. One of these, the doing of the work, is proper to men trained in the individual subject, while the other the theory is common to all scholars.”

Source: De architectura (The Ten Books On Architecture) (~ 15BC), Book I, Chapter I, Sec. 15

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Vitruvius203

Roman writer, architect and engineer -80–-15 BC

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“Pytheos made a mistake by not observing that the arts are each composed of two things, the actual work and the theory of it. One of these, the doing of the work, is proper to men trained in the individual subject, while the other the theory is common to all scholars.”

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