Institutio Oratoria

We are told that Pythagoras on one occasion, when some young men were led astray by their passions to commit an outrage on a respectable family, calmed them by ordering the piper to change her strain to a spondaic measure, while Chrysippus selects a special tune to be used by nurses to entice their little charges to sleep.

Further I may point out that among the fictitious themes employed in declamation is one, doing no little credit to its author's learning, in which it is supposed that a piper is accused of manslaughter because he had played a tune in the Phrygian mode as an accompaniment to a sacrifice, with the result that the person officiating went mad and flung himself over a precipice. If an orator is expected to declaim on such a theme as this, which cannot possibly be handled without some knowledge