" Of equal significance is the idea, also common among the Gnostics, of the σπɩνθήρ or spark.139 It corresponds to the scintilla vitae, the “little spark of the soul” in Meister Eckhart,140 which we meet with rather early in the teachings of Saturninus.141 Similarly Heraclitus, “the physicist,” is said to have conceived the soul as a “spark of stellar essence.”142 Hippolytus says that in the doctrine of the Sethians the darkness held “the brightness and the spark of light in thrall,”143 and that this “very small spark” was finely mingled in the dark waters144 below.145 Simon Magus146 likewise teaches that in semen and milk there is a very small spark which “increases and becomes a power boundless and immutable. "
― C.G. Jung , Aion (Collected Works 9ii)