The more I have travelled, the more I am convinced _that the races of men form the great secret of history and manners_. Man is not so capable of education as philosophers imagine. The influence of governments and laws has less power, radically, than is supposed, over the manners and instincts of any people, while the primitive constitution and the blood of the race have always their influence, and manifest themselves, thousands of years afterwards, in the physical formations and moral habits of a particular family or tribe. Human nature flows in rivers and streams into the vast ocean of humanity; but its waters mingle but slowly, sometimes never; and it emerges again, like the Rhone from the Lake of Geneva, with its own taste and color. Here is indeed an abyss of thought and meditation, and at the same time a grand secret for legislators. As long as they keep the spirit of the race in view they succeed; but they fail when they strive against this natural predisposition: nature is stronger than they are. This sentiment is not that of the philosophers of the present time, but it is evident to the traveller; and there is more philosophy to be found in a caravan journey of a hundred leagues, than in ten years' reading and meditation. There is much truth here, though certainly not what passes for truth with those who study human nature wholly in the closet, and in reforming the world address themselves exclusively to the faults of _others_, and the evils of which they know the least, and which least concern themselves. We hope the day has gone by when we are to be judged by the testimony of false, interested, and malignant accusers alone. We repeat that we are thankful to Mr. Paulding for having stepped forward in our defence. Our assailants arc numerous, and it is indispensable that we should meet the assault with vigor and activity. Nothing is wanting but manly discussion to convince our own people at least, that in continuing to command the services of their slaves, they violate no law divine or human, and that in the faithful discharge of their reciprocal obligations lies their true duty. Let these be performed, and we believe (with our esteemed correspondent Professor Dew) that society in the South will derive much more of good than of evil from this much abused and partially-considered institution. BRUNNENS OF NASSAU. _Bubbles from the Brunnens of Nassau. By an Old Man. New York: Harper and Brothers._ This "old man" is the present Governor of Canada, and a very amusing "old man" is he. A review of his work, which appeared a year ago in the North American, first incited us to read it, a pleasure which necessity has compelled us to forego until the present time--there not having been an American edition put to press until now, and the splendid hot-pressed, calf-bound, gilt-edged edition from Albemarle-street being too costly for very general circulation here.