The subject of On the Eternal in Man is the divine and its reality, the originality and non-derivation of religious experience. Scheler shows the characteristic quality of that which is religious. It is a particular essence that cannot be reduced to anything else. It is a sphere that belongs essentially to humankind; without it we would not be human. If genuine fulfillment is denied it, substitutes come into being. This religious sphere is the most essential, decisive one. It determines man's basic attitude towards reality and in a sense the color, extent and position of all the other human domains in life. It forms the basis for various views about life and thought.
Scheler was emphatically an intuitive philosopher. In Scheler's work the break between being as the almighty but blind rage and value as the knowing but powerless spirit-has become complete, and makes of each human a split being. Personal experiences may be reflected here. The development of Scheler's work as a whole was highly dependent on his personal experiences. It is this that gives Scheler's work its liveliness and its validity.
This book highlights Scheler as a visionary thinker of great intellectual strength who defied the pessimism that many of his peers could not avoid. He comments on the isolated, fragmented nature of man’s existence in society in the twentieth century but suggests that a ‘World-Age of Adjustment’ is on the brink of existence. Scheler argues that the approaching era is a time for the disjointed society of the twentieth-century to heal its fractures and a time for different forms of human knowledge to come together in global understanding.