This collection of scattered thoughts and observations has little order or continuity; it was begun to give pleasure to a good mother who thinks for herself. My first idea was to write a tract a few pages long, but I was carried away by my subject, and before I knew what I was doing my tract had become a kind of book, too large indeed for the matter contained in it, but too small for the subject of which it treats. For a long time I hesitated whether to publish it or not, and I have often felt, when at work upon it, that it is one thing to publish a few pamphlets and another to write a book.