In presenting himself before the public, the author of this work, which is intended for the people, asks a fair and candid consideration of facts and arguments which are not familiar to the general public, or mass of the people, to whom they are of profound practical importance. The object sought is the diffusion of truth, with the hope of arousing attention, in some degree, to serious evils. When truth is presented, it is our duty to receive and act upon it, opposed, as it may be, to prejudices and preconceived opinions. It cannot result in permanent injury, but final good; and as to consequences, we are not responsible for them : our business is to accept the truth, and leave them to Him in whose hands are the destinies of all.
The author is deeply impressed with the evil tendency of the theories generally prevailing concerning the origin of races and their relations toward one another, and would particularly awaken the public mind to that degrading error, which, regarding all mankind as having the same origin and with naturally the same capacities, responsibilities and duties, would reduce all to the same level and mingle them in one common mass, towards which is the general trend of scientific speculation.