The work, of which the first volume is hereby presented to the public, contains essays and studies that are primarily dedicated to issues of ethics and the philosophy of religion. The overall title "Of the Eternal in Man" is intended to suggest that the author is sincerely striving to elevate his spiritual gaze above the storms and spray of this time - into a purer atmosphere, and to focus it on that which is within man that makes him human, that is, through which he partakes in the Eternal. The Publisher of Sciences publishes historical literature by both well-known and lesser-known scientific authors. This makes works that have long been out of print accessible again to interested readers. This book on the Eternal in Man is an unaltered, high-quality reprint of the original edition from 1921. The present first volume represents the religious renewals.