Scent pervades memory but remains invisible, as if emanating from its interior, the way it seems to emanate from the interior of objects. Its nature makes it an apt metaphor for spiritual concepts, for it “can readily be understood as conveying inner truth and intrinsic worth,” observes Classen. “The common association of odor with the breath and with the life-force makes smell a source of elemental power, and therefore an appropriate symbol and medium for divine life and power. Odors can strongly attract or repel, rendering them forceful metaphors for good and evil. Odors are also ethereal, they cannot be grasped or retained; in their elusiveness they convey a sense of both the mysterious presence and the mysterious absence of God. Finally, odors are ineffable, they transcend our ability to define them through language, as religious experience is said to do.”

Why Inventors & Engineers Should Read Science Fiction

Ordinary language is said to be cold because it is disorderly and unbounded. Ritual language, on the other hand, is classified as hot because it is fixed, stylized and repetitious. The "ancient words" used in sacred songs and prayers are the hottest language of all. Believed to have been created at the beginning of time, ancient words have the accumulated heat of all the ages.