I'm glad you have brought this here :-)
This version may be of interest to you and others:
"The only emblem in the entire collection of fifty found in Michael Maier’s Atalanta Fugiens identified directly with the Philosopher’s Stone is emblem #21, the basis for the painting in the present exhibition. Next to the identification of the emblem reads, "Make a circle around man and woman, then a square, now a triangle; make a circle, and you will have the Philosopher’s Stone." The epigram reads,
"Around the man and woman draw a ring,
From which an equal-sided square springs forth.
From this derive a triangle, which should touch
The sphere on every side: and then the Stone
Will have arisen. If this is not clear, Then learn Geometry, and know it all." (Godwin, Michael Maier’s Atalanta Fugiens, p. 147.)
The reconciliation of opposites through their mutual attraction brings man and woman together symbolizing the One thing, the dot or circle. Although they are one, they are also two, equaling by addition three they become the triangle and their multiplicity produces four, the square. From this progression from dot to line to triangle and square, they return again to one, the larger circle, from the union of corporeal love to all-encompassing spiritual Love. Spheres within spheres, a Jacob’s ladder, a golden chain.
[......]The master in the emblem points his compass from circle to circle, or as it has been interpreted, from square to circle, demonstrating the squaring of the circle, the quintessential symbol of the marriage of heaven and earth. This puzzle was originally posed by the Delphic Oracle, to construct a square with a perimeter equal to the circumference of a circle
[....]The square, turning upon itself, produces the circle equal to itself, and the circular movement of the four equal angles turning around one point, is the quadrature of the circle.-Albert Pike (Morals and Dogma, p. 771.)
Manley P. Hall, in his monumental work The Secret Teachings of All Ages (PRS, Los Angeles, 1988) discusses the squaring of the circle in the architecture of the Great Pyramid:
The entire pyramid is an example of perfect orientation and actually squares the circle. This last is accomplished by dropping a vertical line from the apex of the Pyramid to its base line. If this vertical line be considered as the radius of an imaginary circle, the length of the circumference of such a circle will be found to equal the sum of the base lines of the four sides of the Pyramid. (p. XLII)"
The squaring of the circle has figured into the sacred architecture of temples and cathedrals for thousands of years. It is no coincidence that the demonstration of this spiritualization of matter found in Atalanta Fugiens, Emblem 21 takes place on the side of a building. We see that the edifice is cracking and falling away to reveal the secret of its design: we have not really run into a brick wall of mystery, rather, we are instructed by what it reveals. And there is more.
"The Sun and its shadow complete the work". - Atalanta Fugiens, Emblem 45 (p.. 195)
Taken from here: