First published in 1961, An Introduction to General Metaphysics presentsGottfried Martin’s careful study of many of the passages in Plato and Aristotle which deal with metaphysical problems and in particular with the Platonic Theory of Ideas. He has traced the development of the theory both in early works and in late works such as the Parmenides and the Sophistes; and with equal care he has studied the relative passages in Aristotle’s Metaphysics. He has...