ontological determinants of human experience in terms of which religious knowledge (as well as other types of knowledge) can become an ontic possibility? The formulation of our question suggests that the question of knowing is inseparable from the question of being and that any ontic analysis of the sources, methods, and criteria of the special types of knowledge presupposes an ontological understanding of the conditions which make human knowledge possible. Knowledge presupposes being. Cognitive attitudes and methodological procedures, if they are to be anything more than arbitrary constructions, are referential to regions or orders of being and intentional structures within these orders which determine their adequacy or legitimacy of application. The order of matter, for example (independent now of the question concerning its nature and status), as circumscribing the province of the physical sciences, has a peculiar propriety for experimental investigation and quantitative analysis. And, strictly defined, the scientific method possesses precisely this character. Logical empiricism, more than any other contemporary philosophical movement, has concerned itself with a clarification of the methods and criteria of meaning which are applicable to scientific knowledge and has emerged with some notable (and probably noteworthy) results. The logical empiricist argues that the meaning and truth of logical statements are rooted in the criterion of rational intelligibility. Logical propositions, or what Hume had already referred to as relations of ideas, are true if their denial entails a contradiction. A square has four sides or all bachelors are males is a logical truth which carries meaning by virtue of its self-evident character. Empirical state* Calvin O. Schrag is currently an associate professor of philosophy at Purdue University. He was formerly a teaching fellow at Harvard University and a visiting lecturer in philosophy at the University of Illinois (1959-60). He holds the degrees of B.A. (Bethel College, Newton, Kansas) ; B.D. (Yale Divinity School); and Ph.D. (Harvard University). He is the author of Existence and Freedom: Towards an Ontology of Human Finitude, published by Northwestern University Press in 1961. He has also served on a staff of twenty distinguished American scholars who compiled and edited Masterpieces of World Philosophy in Summary Form, published in 1961. In addition, he has contributed articles to such scholarly periodicals as Revue internationale de philosophie; Dialectics; Review of Metaphysics; Ethics; the Personalist; the Journal of Religious Thought; and the Modern Schoolman. This past summer a research grant from the Purdue Research Foundation sent him to the Sorbonne in Paris and the University of Louvain, Belgium, to study contemporary European phenomenology in the Edmund Husserl archives.