(33) In the rare treatise The Secret Symbols of The Rosicrucians, Franz Hartmann defines the sun alchemically as: "The symbol of Wisdom. The Centre of Power or Heart of things. The Sun is a centre of energy and a storehouse of power. Each living being contains within itself a centre of life, which may grow to be a Sun. In the heart of the regenerated, the divine power, stimulated by the Light of the Logos, grows into a Sun which illuminates his mind." In a note, the same author amplifies his description by adding: "The terrestrial sun is the image or reflection of the invisible celestial sun; the former is in the realm of Spirit what the latter is in the realm of Matter; but the latter receives its power from the former."

(19) And the Light of the Sun is as it were a God in the Nature of this World, and by its Virtue [and Influence] it continually kindles the Stars [or Constellations] whereby the Stars [or Constellations] (which are of a very terrible and anguishing Essence) continually exult in Triumph very joyfully. For it [the Sun] is an Essence like the Light of God, which kindles and enlightens the dark Mind of the Father, from whence, by the Light, there arises the divine Joy in the Father.

(22) The Sun is the Goddess in the third Principle; in the created World (understand, in the material Virtue) it went forth out of the Darkness in the Anguish of the Will, in the Way and Manner of the eternal Birth. For when God set the Fiat in the Darkness, then the Darkness received the Will of God, and was impregnated P for the Birth. The Will causes the [sour] Harshness, the Harshness causes the Attracting, and the Stirring of the Attracting to Mobility causes the Bitterness, which is the Woe, and the Woe causes the Anguish, and the Anguish causes the Moving, Breaking, and Rising up. Now the sour Harshness cannot endure the Stirring, and therefore attracts the harder to itself; and the Bitterness or the Attracting will not endure to be stayed, but breaks and stings so very hard in the Attracting, that it stirs up the Heat, wherein the Flash springs up, and the dark [Sourness or] Harshness is affrighted by the Flash, and in the Shriek the Fire kindles, and in the Fire the Light. Now there would be no Light if the Shriek in the Hardness had not been, but there would have remained nothing but Fire; yet the Shriek in the Harshness of the Fire kills the hard Harshness, so that it sinks down as it were to the Ground, and becomes as it were dead and soft; and when the Flash perceives itself in the Harshness, then it is affrighted much more, because it finds the Mother so very mild, and half dead in Weakness; and so in this Shriek its fiery Property becomes white, soft, and mild, and it is the Kindling of the Light, wherein the Fire is changed into a white Clarity, [Glance, Luster, or Brightness.]

(50) Then the fourth Form in the Center of the Soul broke forth there where the Spirit of the Soul was created, [viz.] between the fourth and fifth Form in the Center, near the Heart of God; and so the fourth Form was in the Glance in the Darkness, out of which the World was created, which in its Form parts itself in its Center into the five Parts in its Rising, till [it attains] to the Light of the Sun. For the Stars also in their Center are generated betwixt the fourth and the fifth Form, and the Sun is the P Spring of the fifth Form in the Center; as in the eternal Center, the Heart and the Light of God [is,] which has no Ground; but this [Center] of the Stars and Elements has its Ground in the fourth Form in the dark Mind, in the Rising up of the awakened [or kindled] Flash of the Fire.

(23) In such a Manner as this the Sun rose up in the Fiat, and out of the Sun (in its first Kindling) [rose] the other Planets, viz. upwards, out of the raging Bitterness, Mars [rose,] which pTo. the Splendor of the Sun stayed [or upheld] when it discovered it: And out of the Virtue of the Sun, which raised itself higher, [rose] Jupiter imprisoned in the Center of the Fiat: And out of the Chamber of Anguish [rose] Saturnus: And downwards Venus [rose] from the soft Mildness, when the Harshness was overcome, and was soft, sweet, and sinking down like Water. And when the Light kindled, then out of the sour harsh Wrath came Love and Humility to be, running downwards: And out of the overcome Virtue in the sour Harshness [rose Mercurius,] wherein stands the Knowledge of what was in the Original before the Light: But when the Light made the Virtue in the Place of the Sun material, as it were in an earthly Manner [rose] the Moon.

(72) And first there goes forth the great luminary, named the Sun, and his circumference is like the circumference of the heaven, and he is quite filled with illuminating and heating fire.

(43) Here observe; Adam was created out of the Element, out of the Attracting of the Heart of God, which is the Will of the Father, and therein is the Virgin of the divine Virtue [or Power,] and the outward Regimen (which in the Kindling parted itself into four Parts) would fain have had the same [Virgin] in itself; that is, the Fierceness of the Devil would fain have dwelt in the Heart of God, and have domineered over it, and have opened a Center there, which the Fierceness without the Light cannot do; for every Center was generated and opened with the Kindling of the Light. Thus the Fierceness would fain be over the Meekness, and therefore has God caused the Sun to come forth, so that it has thus opened four Centers, viz. the going forth out of the Element.

(19) For as the Deity is the Virtue [or Power] and Light of Paradise in the second Principle, so the Sun is the Virtue [or Power] and Light of this material World in the third Principle. And as the Deity shines in the Darkness in the first Principle, so the Sun shines in the Darkness in the third Principle. And as the Deity is the eternal Virtue and the Spirit of the eternal Life, so the Sun is the Spirit and the Virtue in the corruptible Life.