The life of the mind, although supremely excellent in itself, cannot bring health into the life of instinct, except when it results in a not too difficult outlet for the instinct of creation. In other cases it is, as a rule, too widely separated from instinct, too detached, too destitute of inward growth, to afford either a vehicle for instinct or a means of subtilizing and refining it. Thought is in its essence impersonal and detached, instinct is in its essence personal and tied to particular circumstances: between the two, unless both reach a high level, there is a war which is not easily appeased. This is the fundamental reason for vitalism, futurism, pragmatism, and the various other philosophies which advertise themselves as vigorous and virile. All these represent the attempt to find a mode of thought which shall not be hostile to instinct. The attempt, in itself, is deserving of praise, but the solution offered is far too facile. What is proposed amounts to a subordination of thought to instinct, a refusal to allow thought to achieve its own ideal. Thought which does not rise above what is personal is not thought in any true sense: it is merely a more or less intelligent use of instinct. It is thought and spirit that raise man above the level of the brutes. By discarding them we may lose the proper excellence of men, but cannot acquire the excellence of animals. Thought must achieve its full growth before a reconciliation with instinct is attempted. When refined thought and unrefined instinct coexist, as they do in many intellectual men, the result is a complete disbelief in any important good to be achieved by the help of instinct. According to their disposition, some such men will as far as possible discard instinct and become ascetic, while others will accept it as a necessity, leaving it degraded and separated from all that is really important in their lives. Either of these courses prevents instinct from remaining vital, or from being a bond with others; either produces a sense of physical solitude, a gulf across which the minds and spirits of others may speak, but not their instincts. To very many men, the instinct of patriotism, when the war broke out, was the first instinct that had bridged the gulf, the first that had made them feel a really profound unity with others. This instinct, just because, in its intense form, it was new and unfamiliar, had remained uninfected by thought, not paralyzed or devitalized by doubt and cold detachment. The sense of unity which it brought is capable of being brought by the instinctive life of more normal times, if thought and spirit are not hostile to it. And so long as this sense of unity is absent, instinct and spirit cannot be in harmony, nor can the life of the community have vigor and the seeds of new growth.