In part one of this paper we shall elucidate an operational concept of logical simplicity as it seems to function in natural science. Although this is a tentative and exploratory formulation, its novelty, relative to the great European philosophical tradition, seems to require a preliminary warning about misunderstandings.

In Part Two we shall apply the formulation to social inquiry and make a positive suggestion for further development of the proposal.

A major problem of the philosophy of science is the construction of a comprehensive science of man and the universe. The sociology of science has a part to play in this tremendous task by indicating the extra-scientific influences bearing upon science at any given period, assisting, in this way, in developing a self-consciousness of science. It is believed that this self-consciousness is necessary to a scientific appraisal of the method of scientific inquiry, as well as being necessary to any attempt to direct the development of science as an institution. This paper is to be regarded as a sociological evaluation of a work in the field of the philosophy of science, namely, F. S. C. Northrop's The Meeting of East and West.

“The age-long endeavour to find an intellectual basis for ethics is an enterprise of such importance, and of such difficulty, that any explorer of that country must always be glad to hear the voices of his fellow-travellers. ‘This,’ Wittgenstein once said to me, ‘is a terrible business—just terrible! You can at best stammer when you talk of it.’”

With these words Waddington introduces his symposium Science and Ethics, a “communal, perhaps even co-operative stammering,” as he calls it. Also the present contribution to the “terrible business” cannot be more than a stammering; The business is so terrible today not only because of its inherent difficulties, but because of the tremendous odds which are at stake. When the Renaissance philosophers built the science of material nature they were fired by an enthusiasm of cosmic exploration. Today we are frozen in awe of a cosmic explosion. When Galileo pioneered his new science he knew that he was in the possession of the truth and that his opponents, steeped in error and superstition, would have to give way—eppur si muove! Today, building the science of ethics, we are neither equally sure nor equally confident. Our science is not yet formulated. Our opponents, though not right, may yet conquer before we have had time to develop the new science. We are not sure whether what was true for physics three hundred years ago is true for ethics today.

The following paper is a continuation of an attempt (2) to explore the possibility of intensifying sociological analysis through the development of heuristic devices. The value of heuristic devices lies, so it seems to me, in their essential simplicity and the consequent broadness of their applicability. A heuristic device differs from a law in that it is not an if, then type of proposition. It is a guide to analysis rather than a statement of the necessary issue of the analysis. It suggests how the analysis may be carried forward rather than states how it must come out. The principle of limits as presented below is an attempt to show how this relatively simple heuristic device may be used in a variety of areas of social analysis.

Professor Quine in recent articles has raised an old question, an ontological one, concerning the status of universals. It is interesting to note that the same positions recur in symbolic logic that have appeared so often in the past in less exact language. There can be little doubt that the question he raises is crucial; and if the issue is not yet settled, there is at least some hope that it may be clarified. Propositions are required to make propositions clear.

This paper is a tentative step toward formalizing in symbolic logic some of the central assumptions of Clark L. Hull's theory of behavior. There will be noticeable deviations from Hull's own terminology and form of statement, but this will be largely in the interest of greater logical simplicity. The notation of symbolic logic will not be used, but the behavioral axioms will be so stated as to admit of easy translation into such notation. Such easy translatability seems to be a prerequisite if theorems are to be derivable with genuine deductive rigor.

In Human Knowledge, Its Scope and Limits Bertrand Russell recognizes and attempts to deal with what is one of the central questions of philosophy since Descartes, “The relation between individual experience and the general body of scientific knowledge.” He states that his purpose is “to discover the minimum principles required to justify scientific inferences.” The search for such principles arises from his belief that “data are private and individual.” He has only scorn for those who, “finding these problems distasteful” have “tried to deny that these problems exist.”