Learn, says Homer, from hence the true use of music. For it became Achilles, the son of Peleus the Just, to sing the famous acts and achievements of great and valiant men. Also, in teaching the most proper time to make use of it, he found out a profitable and pleasing pastime for one’s leisure hours. For Achilles, being both valiant and active, by reason of the disgust he had taken against Agamemnon withdrew from the war. Homer therefore thought he could not do better than by the laudable incitements of music and poetry to inflame the hero’s courage for those achievements which he afterwards performed. And this he did, calling to mind the great actions of former ages. Such was then the ancient music, and such the advantages that made it profitable. To which end and purpose we read that Hercules, Achilles, and many others made use of it; whose master, wisest Chiron, is recorded to have taught not only music, but morality and physic. 41. In brief therefore, a rational person will not blame the sciences themselves, if any one make use of them amiss, but will adjudge such a failing to be the error of those that abuse them. So that whoever he be that shall give his mind to the study of music in his youth, if he meet with a musical education, proper for the forming and regulating his inclinations, he will be sure to applaud and embrace that which is noble and generous, and to rebuke and blame the contrary, as well in other things as in what belongs to music. And by that means he will become clear from all reproachful actions, for now having reaped the noblest fruit of music, he may be of great use, not only to himself but to the commonwealth; while music teaches him to abstain from every thing indecent both in word and deed, and to observe decorum, temperance, and regularity. 42. Now that those cities which were governed by the best laws took care always of a generous education in music, many testimonies may be produced. But for us it shall suffice to have instanced Terpander, who appeased a sedition among the Lacedaemonians, and Thaletas the Cretan, of whom Pratinas writes that, being sent for by the Lacedaemonians by advice of the oracle, he freed the city from a raging pestilence. Homer tells that the Grecians stopped the fury of another noisome pestilence by the power and charms of the same noble science:— With sacred hymns and songs that sweetly please, The Grecian youth all day the Gods appease. Their lofty paeans bright Apollo hears, And still the charming sounds delight his ears.