Harmonices Mundi is one of Kepler's major works & this translation is in one reviewer's words, "a monumental achievement." It is divided into five books: On regular polygons; on the congruence of figures; on the origin of harmonic proportions; on harmonic configurations in astrology; on the harmony of the motions of the heavens. Kepler (in translation) states his thesis, ".Finite things which are circumscribed & shaped can also be grasped by the mind: infinite & unbounded things, insofar as they are such, can be held in by no bonds of knowledge, which is obtained from definitions, by no bonds of constructions. For shapes are in the archetype prior to their being in the product, in the divine mind prior to being in creatures, differently indeed in respect of their subject, but the same in the form of their essence." Using the original figures from Kepler's work, the authors include a careful introduction & meticulous notes. Cited by one reviewer as " a superb work of immense scholarship" & by another as a work that is sure to be a seminal study that will be valuable well into the next millennium.