Reason

... Finally, what is Reason? You have often asked me; and this is my answer: Whene'er the mist, that stands 'twixt God and thee, [Sublimates] to a pure transparency, That intercepts no light and adds no stain There Reason is, and then begins her reign! But alas! ------`tu stesso, ti fai grosso Col falso immaginar, s' che non vedi Ci' che vedresti, se l'avessi scosso.' (Dante, Paradiso, Canto 1, lines 88-90)