Hardly through these watery spheres shall we perceive, with sighs, our ancestral heaven;
at intervals even we shall cease altogether to behold it. By this disastrous sentence direct vision is denied to us;
we can see only by the aid of the outer light; these are but holes that we possess, not eyes.

Orphic fragment from the Hermetic Corpus
2nd century AD

All images ©Petros Koublis