"The noble Quran mentions concerning the Spirit that it is “from the command of my Lord” (qul al-rūh min amri rabbī) (XVII.85). No contact with the Spirit is possible save through the dimension of transcendence, which stands always before man and which connects him with the Ultimate Reality whether It be called the Lord or Brahman or śūnyata. To forget the Spirit and settle for its earthly reflections alone is to be doomed to the world of multiplicity, to separation, division and finally aggression and war. No amount of extolling the human spirit can fill the vacuum created by the forgetting of the Spirit which kindles the human soul but is not itself human. It is necessary to realize the unity of the Spirit behind the multiplicity of religious forms in order to reach the peace that human beings seek. The human spirit as understood in the humanist sense is not sufficient unto itself to serve as basis for the unity of humanity and human understanding across cultural and religious frontiers."
January 1, 1970
https://en.wikiquote.org/wiki/Seyyed_Hossein_Nasr