Mark that even the sun, who seems to reveal himself to all, permits not man to behold him closely, but if any attempts to gaze recklessly upon him, blinds their eyes. And the gods' ministers too you will find to be invisible. That the thunderbolt is hurled from heaven, and that he overwhelms all on whom he falls, is evident, but he is seen neither coming nor striking nor going. And the winds are themselves invisible, yet their deeds are manifest to us, and we perceive their approach. Moreover, the soul of man, which more than all else that is human partakes of the divine, reigns manifestly within us, and yet is itself unseen.
“For these reasons it behoves us not to despise the things that are unseen, but, realising their power in their manifestations, to honour the godhead.”