Saint Lucretius

Hunc igitur terrorem animi, tenebrasque necesse est
non radii solis, neque lucida tela diei
discutiant, set Naturae species, ratioque--

This dread and darkness of the mind therefore need not the rays of the sun, the bright darts of day; only knowledge of nature's forms dispels them.

~~Lucretius, De rerum natura, Book I