It is evident from what we have said, that the theory of the origin of myth has of late made real and important progress in different directions; it has been constituted by fitting methods, and with dispassionate research, laying aside fanciful hypotheses and systems more or less prompted by a desire to support or confute principles which have no connection with science. We have now in great measure arrived at the fundamental facts whence myth is derived, although, if I do not deceive myself, the ultimate fact, and the cause of this fact, have not yet been ascertained; namely, for what reason man personifies all phenomena, first vaguely projecting himself into them, and then exercising a distinct purpose of anthropomorphism, until in this way he has gradually modified the world according to his own image. If we are able to solve this difficult problem, a fact most important to science and to the advancement of these special studies must result from it: the assimilation and concentration of all the sources of myth into a single act, whether normal or abnormal to humanity. To say that animism is the general principle of myth does not reduce the different sources whence it proceeds to a single psychical and organic act, since they remain distinct and separate in their respective orbits. To attain our object, it is necessary that the direct personification of natural phenomena, as well as the indirect personification of metaphor; the infusion of life into a man's own shadow, into reflex images and dreams; the belief in the reality of normal illusions, as well as of the abnormal hallucinations of delirium, of madness, and of all forms of nervous affections; all these things must be resolved into a single generating act which explains and includes them. It must be shown how and why there is found in man the possibility of modifying all these mythical forms into an image supposed to be external to himself, living and personal. For if we are enabled to reply scientifically to such inquiries, we shall not only have concentrated in a single fact all the most diverse normal and abnormal forms of myth peculiar to man, but we shall also have given an ulterior and analytic explanation of this fact. I certainly do not presume to declare myself competent to effect so much, and I am more conscious than my critics how far I fall short of my high aim; but the modest attempt, made with the resolution to accept all criticism offered with courtesy and good faith, does not imply culpable presumption nor excessive vanity.