Sanctuary of natural mysteries

Meaning

II.3.1 says Hermes enters the sanctuary of natural mysteries through the terrification, or making-earthly, of first matter nourished in earth’s womb. The sacred interior is a figure for access to Nature’s hidden constitution, but it is attached to that particular route, not merely a general demand for reverence. Hermes follows Nature’s footsteps and needs knowledge of how to employ his material, in imitation of the divine great Physician who made the world.

Sanctuary does not identify an actual building or authorize exclusion of readers on grounds not stated in the text. Its function is to frame a demanding kind of attention: the investigator must consider Nature's materials, workmanship and intended end before claiming to understand her hidden powers. The image thus joins reverence with an argument about the proper order of knowing.