From the author:

At some moments try to penetrate into something hiding behind the pale face of a human being immersed in thought, and peek into the deep, peek into this soul, peek into this gloom. Under visibility of tranquility there are duels of giants as at Homer and fights of dragons with hydras, there are host of ghosts as at Milton and phantasmagoric circles as at Dante. How dark is the infinity that everyone carries within himself and to which he proportions the fads of his mind and his acts! So the truth, as well as our depth, under the foam of parables isn’t visible sometimes.