Behind every man's external life, which he leads in company, there is another which he leads alone, and which he carries with him apart. We see but one aspect of our neighbor, as we see but one side of the moon; in either case there is also a dark half, which is unknown to us.

The reason why so few good books are written is, that so few people who can write know anything. In general an author has always lived in a room, has read books, has cultivated science, is acquainted with the style and sentiments of the best authors, but he is out of the way of employing his own eyes and ears. He has nothing to hear and nothing to see. His life is a vacuum.