relatedness (relation); relation (relatedness)

What is the source of energy from which we live? Well, you might say there is one source of energy that is purely physical, which is rooted in the chemistry of our body, and we know that that energy is on the decline after the age of twenty-five. After that we are slowly running down, as far as that source of energy is concerned. There is another source of energy, and that is the energy that springs from our being related to the world, our being concerned. You can experience it sometimes when you are with somebody whom you love, or when you read something that is intensely interesting, exciting. Then you don’t get tired. You feel energy coming up which is unexpected. You feel a deep sense of joy, and if you watch some people at the age of eighty who have lived a life of intense relatedness, love, concern, interest, actually you will see the surprising and overwhelming fact of a freshness and an energy there which has nothing to do with the body chemistry, with the sources which they have at their disposal.― (1991e [1953]: Modern Man’s Pathology of Normalcy, in: E. Fromm, The Pathology of Normalcy. Contributions to a Science of Man, New York (American Mental Health Foundation) 2010, p. 58.)