As the geometer intently seeks to square the circle, but he cannot reach, through thought on thought, the principle he needs, so I searched that strange sight.
Dante AlighieriAnd when he had put his hand on mine with a cheerful look, wherefrom I took courage, he brought me within to the secret things. Here sighs, laments, and deep wailings were resounding through the starless air; wherefore at first I wept thereat. Strange tongues, horrible utterances, words of woe, accents of anger, voices high and faint, and sounds of hands with them, were making a tumult which whirls always in that air forever dark, like the sand when the whirlwind breathes.
Dante Alighieri