In Greek Mythology, the daughter of Acrisius, king of Argos. It was foretold that the king would be killed by his daughter’s son, and he therefore shut Danaë in a bronze tower to keep her suitors away. But Jupiter visited her in the form of a shower of golden rain and lay with her (Met. 4:611). Their offspring was Perseus, who eventually killed his grandfather accidentally with a discus. The theme was popular with Renaissance painters as a vehicle for portraying the female nude. Danaë reclines on cushions on a canopied couch, looking upwards expectantly. A golden light or a shower, sometimes in the shape of coins, falls on her from a cloud. An old woman, Danaë’s attendant, may hold out her apron to catch the gold. Cupid and amoretti may be present. To the Middle Ages, Danaë was both a symbol of chastity and an example of the conception of the virgin solely through divine intervention. The theme was thus regarded as a prefiguration of the Annunciation. The idea of a mystic impregnation occurs also in the story of GIDEON’s FLEECE which was similarly said to prefigure the Annunciation.
The Endless Knot has been described as "an ancient symbol representing the interweaving of the Spiritual path, the flowing of Time and Movement within That Which is Eternal. All existence, it says, is bound by time and change, yet ultimately rests serenely within the Divine and the Eternal."
There are other variations and interpretations of the symbol:
The eternal continuum of mind;
Samsara i.e., the endless cycle of suffering or birth, death and rebirth within Tibetan Buddhism;
The inter-twining of wisdom and compassion;
Interplay and interaction of the opposing forces in the dualistic world of manifestation, leading to their union, and ultimately to harmony in the universe;
The mutual dependence of religious doctrine and secular affairs;
The union of wisdom and method;
The inseparability of emptiness (shunyata) and dependent origination, the underlying reality of existence;
Symbolic linking of ancestors and omnipresence; and
since the knot has no beginning or end it also symbolizes the wisdom of the Buddha.