Abstract
This essay in transcendental philosophy argues for theism on the basis that God is the guarantor of meaning. In the pursuit of the logical and metaphysical foundations of theoretical thought, where thought is taken as that which stands "in intentional relation to the act or function of thinking," Young begins by dwelling overly long on the linguistic origin of "theory" in the Greek theoria as used by the Pythagoreans, Plato, and Aristotle. He then proceeds through a discussion of the family resemblances among scientific and philosophical usages of "theory" to the understanding of the content of theoretical thought as meaning formed in concepts and propositions. The marks of the contents of theoretical thought are abstractness, universality, and a priority. Utilizing a distinction between cogency and validity and distinguishing among presuppositions, rules, and premisses. Young attempts to justify the belief in the existence of God on the basis of the ontological argument which he gives in various formulations. The resurrection of the ontological argument in the context of modal logic and language philosophy is an interesting exercise.--J. B. L.