No great thinker has been able to resist the attempt to analyze the enigmatic nature of the Fire. Without a doubt, few have been able to capture the essence that exists beyond the flame. Thanks to this work, we will be able to understand the mystery that surrounds the most precious of Fires, the one that will have to fecundate the mercury of the sages so that once fused with it, to ascend victoriously through the spinal cord and open, in its passage, each chakra of the etheric body of the Gnostic ascetic.