It declares, as Darwin himself said, that great as is the physical unlikeness of the various races of men their likenesses are greater, and upon this rests the whole scientific doctrine of Human Brotherhood. Although the wonderful developments of human history teach that the grosser physical differences of color, hair and bone go but a short way toward explaining the different roles which groups of men have played in Human Progress, yet there are differences--subtle, delicate and elusive, though they may be--which have silently but definitely separated men into groups. While these subtle forces have generally followed the natural cleavage of common blood, descent and physical peculiarities, they have at other times swept across and ignored these. At all times, however, they have divided human beings into races, which, while they perhaps transcend scientific definition, nevertheless, are clearly defined to the eye of the Historian and Sociologist. If this be true, then the history of the world is the history, not of individuals, but of groups, not of nations, but of races, and he who ignores or seeks to override the race idea in human history ignores and overrides the central thought of all history. What, then, is a race? It is a vast family of human beings, generally of common blood and language, always of common history, traditions and impulses, who are both voluntarily and involuntarily striving together for the accomplishment of certain more or less vividly conceived ideals of life. Turning to real history, there can be no doubt, first, as to the widespread, nay, universal, prevalence of the race idea, the race spirit, the race ideal, and as to its efficiency as the vastest and most ingenious invention for human progress. We, who have been reared and trained under the individualistic philosophy of the Declaration of Independence and the laisser-faire philosophy of Adam Smith, are loath to see and loath to acknowledge this patent fact of human history. We see the Pharaohs, Caesars, Toussaints and Napoleons of history and forget the vast races of which they were but epitomized expressions. We are apt to think in our American impatience, that while it may have been true in the past that closed race groups made history, that here in conglomerate America _nous avons changer tout cela_--we have changed all that, and have no need of this ancient instrument of progress. This assumption of which the Negro people are especially fond, can not be established by a careful consideration of history.