The preferring of Apollo and his instruments to Marsyas and his instruments is not at all strange, I said.
Not at all, he replied.
And so, by the dog of Egypt, we have been unconsciously purging the
State, which not long ago we termed luxurious.
And we have done wisely, he replied.
Then let us now finish the purgation, I said. Next in order to harmonies, rhythms will naturally follow, and they should be subject to the same rules, for we ought not to seek out complex systems of metre, or metres of every kind, but rather to discover what rhythms are the expressions of a courageous and harmonious life; and when we have found them, we shall adapt the foot and the melody to words having a like spirit, not the words to the foot and melody. To say what these rhythms are will be your duty—you must teach me them, as you have already taught me the harmonies.
But, indeed, he replied, I cannot tell you. I only know that there are some three principles of rhythm out of which metrical systems are framed, just as in sounds there are four notes out of which all the harmonies are composed; that is an observation which I have made. But of what sort of lives they are severally the imitations I am unable to say.
Then, I said, we must take Damon into our counsels; and he will tell us what rhythms are expressive of meanness, or insolence, or fury, or other unworthiness, and what are to be reserved for the expression of opposite feelings. And I think that I have an indistinct recollection of his mentioning a complex Cretic rhythm; also a dactylic or heroic, and he arranged them in some manner which I do not quite understand, making the rhythms equal in the rise and fall of the foot, long and short alternating; and, unless I am mistaken, he spoke of an iambic as well as of a trochaic rhythm, and assigned to them short and long quantities. Also in some cases he appeared to praise or censure the movement of the foot quite as much as the rhythm; or perhaps a combination of the two; for I am not certain what he meant. These matters, however, as I was saying, had better be referred to Damon himself, for the analysis of the subject would be difficult, you know.
Rather so, I should say.
But there is no difficulty in seeing that grace or the absence of grace is an effect of good or bad rhythm.
None at all.