“Music is a science which should have definite rules; these rules should be drawn from an evident principle; and this principle cannot really be known to us without the aid of mathematics.” ShouldKnownPrinciplesMusic IsShould HaveMathematicsAidsDefiniteEvident Book:Traite de l'harmonie reduites a ses principes naturels Source: Traite de l'harmonie reduites a ses principes naturels