Atalanta Fugiens · 1618 · Emblem XXXII
Corallus sub aquis ut crescit et aere induratur, sic lapis.
As coral grows under water and hardens in the air, so the stone.
It grows in one element and becomes fixed in another. Nothing is used until it has hardened.
What has grown in you that has not yet hardened?
Michael Maier, Atalanta Fugiens (Oppenheim, 1618). Engraving in the public domain. Motto transcribed from the 1618 edition; translation and reading by The Hermetic School. All the emblems.