Harmony (n.) is order in the voice, as rhythm is order in movement; joined together, they make a chorus.
Harmony (n.) is not discord agreeing with itself but discord resolved: there can be no harmony while high and low still quarrel.
Harmony (n.) is best played not on a lyre but on a life: the true musician tunes his deeds to his words in the Dorian mode.
Harmony (n.) does not direct its components but is directed by them — whereas the soul rules, opposes and punishes the very body it is said to be the tuning of.
Harmony (n.) in the truest sense belongs to the one who blends music and gymnastics in his soul, far more than to one who merely tunes the strings of his instrument.
Harmony (n.) is a gift of the Muses meant not for irrational pleasure, as people use it now, but as an ally in bringing a jangled soul back into tune with itself.
Harmony (n.) is invisible, bodiless and divine in the tuned lyre — yet it perishes the moment the strings are cut; so too the soul, if it is the body's attunement.
Harmony (n.) is composed last of all and is the first to be destroyed; the lyre, strings and notes exist before it — so a soul that preexists the body cannot be a harmony.
Harmony (n.) is mathematics (the eternal antidote to heraclitean flux) made audible, and then as harmonious psyche is 'writ large' in the harmonious polis, then larger (or largest) in the harmony of the spheres, the kosmos.