As we have found that spiritualism in general breaks into a more intimate and a less intimate species, so the more intimate species itself breaks into two subspecies, of which the one is more monistic, the other more pluralistic in form. I say in form, for our vocabulary gets unmanageable if we don’t distinguish between form and substance here. The inner life of things must be substantially akin anyhow to the tenderer parts of man’s nature in any spiritualistic philosophy. The word ‘intimacy’ probably covers the essential difference. Materialism holds the foreign in things to be more primary and lasting, it sends us to a lonely corner with our intimacy. The brutal aspects overlap and outwear; refinement has the feebler and more ephemeral hold on reality.
From a pragmatic point of view the difference between living against a background of foreignness and one of intimacy means the difference between a general habit of wariness and one of trust. One might call it a social difference, for after all, the common socius of us all is the great universe whose children we are. If materialistic, we must be suspicious of this socius, cautious, tense, on guard. If spiritualistic, we may give way, embrace, and keep no ultimate fear.
The contrast is rough enough, and can be cut across by all sorts of other divisions, drawn from other points of view than that of foreignness and intimacy. We have so many different businesses with nature that no one of them yields us an all-embracing clasp. The philosophic attempt to define nature so that no one’s business is left out, so that no one lies outside the door saying ’Where do I come in?’ is sure in advance to fail. The most a philosophy can hope for is not to lock out any interest forever. No matter what doors it closes, it must leave other doors open for the interests which it neglects. I have begun by shutting ourselves up to intimacy and foreignness because that makes so generally interesting a contrast, and because it will conveniently introduce a farther contrast to which I wish this hour to lead.