The book is prefaced by two communications--one from Garrison, and one from Wendell Phillips. That from the former is in his usual over-emphatic style. His motives and his course have been noble and generous; we look upon him with high respect; but he has indulged in violent invective and denunciation till he has spoiled the temper of his mind. Like a man who has been in the habit of screaming himself hoarse to make the deaf hear, he can no longer pitch his voice on a key agreeable to common ears. Mr. Phillips's remarks are equally decided, without this exaggeration in the tone. Douglass himself seems very just and temperate. We feel that his view, even of those who have injured him most, may be relied upon. He knows how to allow for motives and influences. Upon the subject of religion, he speaks with great force, and not more than our own sympathies can respond to. The inconsistencies of slaveholding professors of religion cry to Heaven. We are not disposed to detest, or refuse communion with them. Their blindness is but one form of that prevalent fallacy which substitutes a creed for a faith, a ritual for a life. We have seen too much of this system of atonement not to know that those who adopt it often began with good intentions, and are, at any rate, in their mistakes worthy of the deepest pity. But that is no reason why the truth should not be uttered, trumpet-tongued, about the thing. "Bring no more vain oblations;" sermons must daily be preached anew on that text. Kings, five hundred years ago, built churches with the spoils of war; clergymen to-day command slaves to obey a gospel which they will not allow them to read, and call themselves Christians amid the curses of their fellow-men. The world ought to get on a little faster than this, if there be really any principle of improvement in it. The kingdom of heaven may not at the beginning have dropped seed larger than a mustard-seed, but even from that we had a right to expect a fuller growth than we can believe to exist, when we read such a book as this of Douglass. Unspeakably affecting is the fact that he never saw his mother at all by daylight. "I do not recollect of ever seeing my mother by the light of day. She was with me in the night. She would lie down with me, and get me to sleep, but long before I waked she was gone." The following extract presents a suitable answer to the hackneyed argument drawn by the defender of slavery from the songs of the slave, and is also a good specimen of the powers of observation and manly heart of the writer. We wish that every one may read his book, and see what a mind might have been stifled in bondage--what a man may be subjected to the insults of spendthrift dandies, or the blows of mercenary brutes, in whom there is no whiteness except of the skin, no humanity except in the outward form, and of whom the Avenger will not fail yet to demand, "Where is thy brother?"