Howard Gardner, a neuropsychologist specialized in the research on human intelligence, became wordly famous through his theory about the multiple intelligences. He speaks in several books of eight different types of intelligence, but until very recently he did not take into the consideration the existence of a specific religious, spiritual or existential intelligence. A. Emmons, using the criteria suggested by Gardner for accepting intelligence as autonomous, tries to prove, using also neuroscientific arguments, that it is the case to assert the existence of a type of intelligent approach to reality that he calls "spiritual intelligence".