Abstract
Elders' work is patterned after Ross's editions of Aristotle's Physics, Metaphysics, and Analytics, except that Elders does not include the Greek text to accompany his commentary. Each chapter of the four books of De Caelo is briefly summarized and a line by line commentary ensues with special consideration given to the more controversial passages. In an introduction to his commentary, Elders develops the essential themes surrounding Aristotle's cosmology: 1) The proper historical setting, 2) The notion of natural movement and elementary bodies, 3) The role of metaphysics in Aristotle's cosmology, Aristotle's notion of science and methodology. Elders seems to gloss over the main problem that Aristotle's Cosmology engenders, viz., whether the heavenly spheres move by a natural necessity or are moved by a supra-celestial principle. His comment on the first chapter of Book III points out Aristotle's intention of including both the heavens and the sub-lunar sphere under the study of Physics. He correctly points out that if one is to understand the De Caelo, then one must "look upon cosmology the way its author did, viz., as a science of intellectual vision, rather than as a labor of toilsome research: the study of the cosmos is an intellectual effort which finds its end and its reward in itself."—J. J. R.