The parents always insisted on telling their child that their secret friends didn't exist - perhaps because they had forgotten that they too had spoken to their angel at one time. Or, who knows, perhaps they thought they lived in a world where there was no longer any place for angels.
The book which the reader now holds in his hands, from one end to the other, as a whole and in its details, whatever gaps, exceptions, or weaknesses it may contain, treats of the advance from evil to good, from injustice to justice, from falsity to truth, from darkness to daylight, from blind appetite to conscience, from decay to life, from bestiality to duty, from Hell to Heaven, from limbo to God. Matter itself is the starting-point, and the point of arrival is the soul. Hydra at the beginning, an angel at the end.
He who does not see the angels and devils in the beauty and malice of life will be far removed from knowledge, and his spirit will be empty of affection.