with firmness, and to apply it on all occasions, without listening to any exceptions, is extremely difficult, but it must be done by whoever wishes to elevate the study of history from its present crude and informal state, and do what he may toward placing it in its proper rank, as the head and chief of all the sciences. Even then, he cannot perform his task unless his materials are ample, and derived from sources of unquestioned credibility. But if his facts are sufficiently numerous; if they are very diversified; if they have been collected from such various quarters that they can check and confront each other, so as to do away with all suspicion of their testimony being garbled; and if he who uses them possesses that faculty of generalization, without which nothing great can be achieved, he will hardly fail in bringing some part of his labors to a prosperous issue, provided he devotes all his strength to that one enterprise, postponing to it every other object of ambition, and sacrificing to it many interests which men hold dear. Some of the most pleasurable incentives to action, he must disregard. Not for him are those rewards which in other pursuits the same energy would have earned; not for him, the sweets of popular applause; not for him, the luxury of power; not for him, a share in the councils of his country; not for him a conspicuous and honored place before the public eye. Albeit, conscious of what he could do, he may not compete in the great contest; he cannot hope to win the prize; he cannot even enjoy the excitement of the struggle. To him the arena is closed. His recompense lies within himself, and he must learn to care little for the sympathy of his fellow creatures, or for such honors as they are able to bestow. So far from looking for these things, he should rather be prepared for that obloquy which always awaits those, who, by opening up new veins of thought, disturb the prejudices of their contemporaries. While ignorance, and worse than ignorance, is imputed to him, while his motives are misrepresented and his integrity impeached, while he is accused of denying the value of moral principles, and of attacking the foundation of all religion, as if he were some public enemy, who made it his business to corrupt society, and whose delight it was to see what evil he could do; while these charges are brought forward, and repeated from mouth to mouth, he must be capable of pursuing in silence the even tenor of his way, without swerving, without pausing, and without stepping from his path to notice the angry outcries which he cannot but hear, and which he is more than human if he does not long to rebuke. These are the qualities, and these the high resolves, indispensable to him who, on the most important of all