Institutio Oratoria

Consequently we must also avoid ending our periods with words containing too many syllables. With regard to the middle portions of our periods we must take care not merely that they possess internal cohesion, but also that the rhythm is neither sluggish nor long, and above all that we do not fall into the now fashionable fault of placing a number of short syllables together with the result that we produce an effect not unlike the sound of a child's rattle.

For while the beginnings and conclusions of periods, where the sense begins or ends, are the most important, it is none the less the fact that the middle portion may involve some special efforts which necessitate slight pauses. Remember that the feet of a runner, even though they do not linger where they fall, still leave a footprint. Consequently not only must commata and cola begin and end becomingly, but even in parts which are absolutely continuous without a breathing space, there must be such almost imperceptible pauses.