Fama Fraternitatus of the Rosiecrucian Manifestos.

Anonymous manuscript that lit up esoteric circles across Europe in the early 1600s. Reads like discovery of an ancient and advanced base. includes an invitation (and warning) for seekers.

[…]

*In the morning following we opened the door, and there appeared to our sight a VAULT of SEVEN SIDES and corners, every side five foot broad, and the height of eight foot; Although the SUN NEVER SHINED IN THIS VAULT, NEVERTHELESS it was ENLIGHTENED with ANOTHER SUN, which had learned this from the Sun, and was situated in the UPPER part in the CENTRE of the CEILING; in the midst, in stead of a Tomb-stone, was a round Altar covered over with a plate of brass, and thereon this ENGRAVEN: (TRANSLATION): “I have made this summary of the universe a tomb for myself.”

Of the upper part you shall understand no more of it at this time, but that it was divided according to the seven sides in the triangle, which was in the bright center; but what therein is contained, you shall God willing (that are desirous of our society) behold the same with your own eyes; but every side or wall is parted into ten squares, every one with their several figures and sentences, as they are truly shewed, and set forth Concentratum here in our book.

[…]

Now as yet we had not seen the dead body of our careful and wise father, we therefore removed the Altar aside, there we lifted up a strong plate of brass, and found a FAIR and WORTHY BODY, WHOLE and UNCONSUMED, as the same is here lively counterfeited, with all the Ornaments and Attires; in his hand he held a parchment book, called “I”. the which NEXT to the Bible, is our GREATEST TREASURE, which OUGHT to be DELIVERED to the censure of the WORLD.*