But a motive which weighs more with me than either of these, is a desire to make acknowledgment of the debts which my intellectual and moral development owes to other persons; some of them of recognised eminence, others less known than they deserve to be, and the one to whom most of all is due, one whom the world had no opportunity of knowing. The reader whom these things do not interest, has only himself to blame if he reads farther, and I do not desire any other indulgence from him than that of bearing in mind that for him these pages were not written.