Book 9
2.115
Further it is not so important for us to consider the actual feet as the general rhythmical effect of the period, just as the poet in writing a verse considers the metre as a whole, and does not concentrate his attention on the six or five individual feet that constitute the verse. For poetry originated before the laws which govern it, a fact which explains Ennius' statement Enn. Ann. 213. that Fauns and prophets sang.
2.116
Therefore rhythmical structure will hold the same place in prose that is held by versification in poetry. The best judge as to rhythm is the ear, which appreciates fullness of rhythm or feels the lack of it, is offended by harshness, soothed by smooth and excited by impetuous movement, and approves stability, while it detects limping measures and rejects those that are excessive and extravagant. It is for this reason that those who have received a thorough training understand the theory of artistic structure, while even the untrained derive pleasure from it.