Among the writers who have attempted to distinguish, in the human character, its original qualities, and to point out the limits between nature and art, some have represented mankind in their first condition, as possessed of mere animal sensibility, without any exercise of the faculties that render them superior to the brutes, without any political union, without any means of explaining their sentiments, and even without possessing any of the apprehensions and passions which the voice and the gesture are so well fitted to express. Others have made the state of nature to consist in perpetual wars kindled by competition for dominion and interest, where every individual had a separate quarrel with his kind, and where the presence of a fellow creature was the signal of battle.
The desire of laying the foundation of a favourite system, or a fond expectation, perhaps, that we may be able to penetrate the secrets of nature, to the very source of existence, have, on this subject, led to many fruitless inquiries, and given rise to many wild suppositions. Among the various qualities which mankind possess, we select one or a few particulars on which to establish a theory, and in framing our account of what man was in some imaginary state of nature, we overlook what he has always appeared within the reach of our own observation, and in the records of history.
In every other instance, however, the natural historian thinks himself obliged to collect facts, not to offer conjectures. When he treats of any particular species of animals, he supposes that their present dispositions and instincts are the same which they originally had, and that their present manner of life is a continuance of their first destination. He admits, that his knowledge of the material system of the world consists in a collection of facts, or at most, in general tenets derived from particular observations and experiments. It is only in what relates to himself, and in matters the most important and the most easily known, that he substitutes hypothesis instead of reality, and confounds the provinces of imagination and reason, of poetry and science.
But without entering any further on questions either in moral or physical subjects, relating to the manner or to the origin of our knowledge; without any disparagement to that subtilty which would analyze every sentiment, and trace every mode of being to its source; it may be safely affirmed, that the character of man, as he now exists, that the laws of his animal and intellectual system, on which his happiness now depends, deserve our principal study; and that general principles relating to this or any other subject, are useful only so far as they are founded on just observation, and lead to the knowledge of important consequences, or so far as they enable us to act with success when we would apply either the intellectual or the physical powers of nature, to the purposes of human life.