I. Introduction -- The Problem -- The Importance of the Timaeus -- Modern scholarship and the relation of Aristotle to Plato -- Chronology to be used -- Sources and method of examining them -- II. Aristotle's Criticism of the Receptacle -- Plato's 'Receptacle'; Aristotle's 'matter' -- Identification of the two by means of the gold analogy -- Other similarities between the two -- Both are Non-being -- Both are unintelligible -- Both are full of potencies -- Both are infinite -- Both are Great and Small -- Both are extended -- Not empty space (the void) -- Space as contained and container -- Summary of the chapter -- III. Aristotle's Criticism of the Simple Bodies -- History of the term 'Element' -- Plato's view of the simple bodies -- The four earthly bodies -- Construction of plane-figures -- Meaning of plane-figures -- Aristotle's view of the elements -- Plato and Aristotle on the meaning and value of mathematical analysis -- Aristotle's criticisms of planes and plane-figures. -- Summary of the chapter -- IV. Aristotle's Criticism of Qualities -- Definition of 'quality' -- Plato's treatment of qualities -- Aristotle's treatment of qualities -- General criticisms of Plato's views -- The problem of weight -- Aristotle's doctrine (natural places, absolute directions, weight) -- Plato's doctrine (natural places, relative directions, weight) -- Aristotle's criticisms of weight -- Summary of the chapter -- V. Aristotle's Criticism of Motion -- Motions and their causes (Plato) -- Motions and their causes (Aristotle) -- The motion of the earth in the Timaeus -- ?????????? and its support -- ????????? and its support -- The position of the earth, a related question. -- Possible interpretations -- The earth at rest -- The earth in motion (kinds) -- Summary of the chapter -- VI. Aristotle's Criticism of Time -- 'Time' in the Timaeus -- 'Time' in Aristotle -- Aristotle's criticisms -- Similarities between the two views -- The problem of whether Time began -- Summary of the chapter -- VII. Aristotle's Criticism of Soul -- The intermediate character of myth -- Mythical nature of the Timaeus -- Value of myth -- The problem of soul -- Plato's general view of soul -- Living Creature and World-soul -- Human soul -- Aristotle's general view of soul -- Aristotle's criticisms of soul -- World-soul and the Unmoved Mover -- World-soul and God -- God as Demiurge -- God as Cause -- VIII. Aristotle's Criticism of 'Nature' -- 'Nature' to the Pre-Socratics -- 'Nature' to Plato -- 'Nature' to Aristotle -- Teleology in Plato's doctrine -- In Aristotle's -- Plato, Aristotle, and their predecessors -- Plato and Aristotle compared on doctrines -- Conclusion -- Index of Passages in Aristotle and Plato -- General Index.