tutions of the leading Greek states, he dissected the great dramatic literature of his age, he dissected fishes, he dissected sentences and arguments, he taught the youthful Alexander. A man, who had done these things and others, might well have been excused if he had pleaded lack of time for mere abstract thought.
In considering the culmination of Greek speculation in Plato and Aristotle the characteristics which finally stand out are the universality of their interests, the systematic exactness at which they aimed, and the generality of their thoughts. It is no rash induction to conclude that these combined characteristics constitute one main preservative of speculation from folly.
The speculative Reason works in two ways so as to submit itself to the authority of facts without loss of its mission to transcend the existing analysis of facts. In one way it accepts the limitations of a special topic, such as a science or a practical methodology. It then seeks speculatively to enlarge and recast the categoreal ideas within the limits of that topic. This is speculative Reason in its closest alliance with the methodological Reason.
In the other way, it seeks to build a cosmology expressing y the general nature of the world as disclosed in human interests. It has already been pointed out, that in order to keep such a cosmology in contact with reality account must be taken of the welter of established institutions constituting the structures of human society throughout the ages.