Professor Bergson, believing as he does in a heraclitean 'devenir réel,' ought, if I rightly understand him, positively to deny that in the actual world the logical axioms hold good without qualification. Not only, according to him, do terms change, so that after a certain time the very elements of things are no longer what they were, but relations also change, so as no longer to obtain in the same identical way between the new things that have succeeded upon the old ones. If this were really so, then however indefinitely sames might still be substituted for sames in the logical world of nothing but pure sameness, in the world of real operations every line of sameness actually started and followed up would eventually give out, and cease to be traceable any farther. Sames of the same, in such a world, will not always (or rather, in a strict sense will never) be the same as one another, for in such a world there _is_ no literal or ideal sameness among numerical differents. Nor in such a world will it be true that the cause of the cause is unreservedly the cause of the effect; for if we follow lines of real causation, instead of contenting ourselves with Hume's and Kant's eviscerated schematism, we find that remoter effects are seldom aimed at by causal intentions,[1] that no one kind of causal activity continues indefinitely, and that the principle of skipt intermediaries can be talked of only _in abstracto_.[2] Volumes i, ii, and iii of the _Monist_ (1890-1893) contain a number of articles by Mr. Charles S. Peirce, articles the originality of which has apparently prevented their making an immediate impression, but which, if I mistake not, will prove a gold-mine of ideas for thinkers of the coming generation. Mr. Peirce's views, tho reached so differently, are altogether congruous with Bergson's. Both philosophers believe that the appearance of novelty in things is genuine. To an observer standing outside of its generating causes, novelty can appear only as so much 'chance'; to one who stands inside it is the expression of 'free creative activity.' Peirce's 'tychism' is thus practically synonymous with Bergson's 'devenir réel.' The common objection to admitting novelties is that by jumping abruptly in, _ex nihilo_, they shatter the world's rational continuity. Peirce meets this objection by combining his tychism [Footnote 1: Compare the douma with what Perry aimed at.] [Footnote 2: Compare Appendix B, as to what I mean here by 'real' casual activity.]