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. The majority of men are sympathetic. Comparatively few are cynics because they like cynicism, and most of our existing materialists are such because they think the evidence of facts impels them, or because they find the idealists they are in contact with too private and tender-minded; so, rather than join their company, they fly to the opposite extreme. I therefore propose to you to disregard materialists altogether for the present, and to consider the sympathetic party alone.