There is cause for just surprise that the chief facts of this entire subject have been so generally overlooked, in all the theological discussions, and in all the physio-sociological researches, of the earlier and the later times. Yet this only furnishes another illustration of the inevitably cramping influence of a pre-conceived fixed theory,--to which all the ascertained facts must be conformed,--in any attempt at thorough and impartial scientific investigation. It would seem to be because of such cramping, that no one of the modern students of myth and folk-lore, of primitive ideas and customs, and of man’s origin and history, has brought into their true prominence, if indeed he has even noticed them in passing, the universally dominating primitive convictions: that the blood is the life; that the heart, as the blood-fountain, is the very soul of every personality; that blood-transfer is soul-transfer; that blood-sharing, human, or divine-human, secures an inter-union of natures; and that a union of the human nature with the divine is the highest ultimate attainment reached out after by the most primitive, as well as by the most enlightened, mind of humanity.
Certainly, the collation of facts comprised in this volume grew out of no pre-conceived theory on the part of its author. Whatever theory shows itself in their present arrangement, is simply that which the facts themselves have seemed to enforce and establish, in their consecutive disclosure.
I should have been glad to take much more time for the study of this theme, and for the re-arranging of its material, before its presentation to the public; but, with the pressure of other work upon me, the choice was between hurrying it out in its present shape, and postponing it indefinitely. All things considered, I chose the former alternative.
In the prosecution of my investigations, I acknowledge kindly aid from Professor Dr. Georg Ebers, Principal Sir William Muir, Dr. Yung Wing, Dean E. T. Bartlett, Professors Doctors John P. Peters and J. G. Lansing, the Rev. Dr. M. H. Bixby, Drs. D. G. Brinton and Charles W. Dulles, the Rev. Messrs. R. M. Luther and Chester Holcombe, and Mr. E. A. Barber; in addition to constant and valuable assistance from Mr. John T. Napier, to whom I am particularly indebted for the philological comparisons in the Oriental field, including the Egyptian, the Arabic, and the Hebrew.