Mr. Walter Polakov of New York City, Industrial Counsellor and Industrial Engineer in New York City, has kindly consented at my request to act, with my authority, as my representative to whom any further queries should be addressed in my absence from America. To all other friends who have helped in many personal ways I express thankfulness, as I wish also to thank John Macrae, Esq., the Vice-President of E. P. Dutton & Co., for his unusual attitude toward publishing the book. A. K. _January 17, 1921_ _New York City._ Chapter I. Introduction. Method and Processes of Approach to a New Concept of Life “For a while he trampled with impunity on laws human and divine but, as he was obsessed with the delusion that two and two makes five, he fell, at last a victim to the relentless rules of humble Arithmetic. “Remember, O stranger, Arithmetic is the first of the sciences and the mother of safety.” BRANDEIS. It is the aim of this little book to point the way to a new science and art—the science and art of Human Engineering. By Human Engineering I mean the science and art of directing the energies and capacities of human beings to the advancement of human weal. It need not be argued in these times that the establishment of such a science—the science of human welfare—is an undertaking of immeasurable importance. No one can fail to see that its importance is supreme. It is evident that, if such a science is to be established it must be founded on ascertained facts—it must accord with what is _characteristic_ of Man—it must be based upon a just conception of what Man is—upon a right understanding of Man’s place in the scheme of Nature.