Spiritual naturalism

Spiritual Naturalism, or Naturalistic Spirituality, is the umbrella term for a variety philosophical and religious worldviews that try to synthesize mundane and spiritual ways of looking at the world. Book searches for the two find no usage for Naturalistic Spirituality before 1956whereas Spiritual Naturalism may have first been proposed by Joris-Karl Huysmans in 1895 in his book En Route - “In 'En Route' Huysmans started upon the creation of what he called ‘Spiritual Naturalism,’ that is, realism applied to the story of a soul. ...”.