Abstract

This is a very valuable study of the relations, as regards affinity and mutual influence, of two major philosophers who are now more and more being assessed at what we may hold to be their immense true worth. Both were philosophers who brought a form of Platonic realism, quite out of fashion at the time, into their interpretation of logical and mathematical concepts and principles, and who moved away from the psychologistic approaches which see such concepts and principles merely as a set of forms and rules which govern our actual human thinking and its linguistic expression, and whose normative or standard-fixing aspects have their roots in the mere way in which our minds work and the mere ways in which the actual world fits in with their workings. But both thinkers, at a higher level, moved on to a view in which something like a transcendental Kantian Reason served as the ultimate foundation both of the forms and guiding principles of referential thought and of the factual empirical world whose structure this thought tries to encompass and to articulate. Both philosophers further seek in the mediating concept of Sinn or sense, as closely connected with the uses of language as with the objective matters with which language deals, the link between thought and other subjective orientations, on the one hand, and the various objective matters with which thought and language are concerned. Both thinkers, however, display great obscurities at certain points in the working out of their thoughts, by which obscurities their relation to one another is also at certain points rendered obscure.