However, even if the difficulties attending all these questions should still leave room for difference in this respect between men and brutes, there is another very specific quality which distinguishes them, and which will admit of no dispute. This is the faculty of self-improvement, which, by the help of circumstances, gradually develops all the rest of our faculties, and is inherent in the species as in the individual: whereas a brute is, at the end of a few months, all he will ever be during his whole life, and his species, at the end of a thousand years, exactly what it was the first year of that thousand. Why is man alone liable to grow into a dotard? Is it not because he returns, in this, to his primitive state; and that, while the brute, which has acquired nothing and has therefore nothing to lose, still retains the force of instinct, man, who loses, by age or accident, all that his _perfectibility_ had enabled him to gain, falls by this means lower than the brutes themselves? It would be melancholy, were we forced to admit that this distinctive and almost unlimited faculty is the source of all human misfortunes; that it is this which, in time, draws man out of his original state, in which he would have spent his days insensibly in peace and innocence; that it is this faculty, which, successively producing in different ages his discoveries and his errors, his vices and his virtues, makes him at length a tyrant both over himself and over nature.[1] It would be shocking to be obliged to regard as a benefactor the man who first suggested to the Oroonoko Indians the use of the boards they apply to the temples of their children, which secure to them some part at least of their imbecility and original happiness. Savage man, left by nature solely to the direction of instinct, or rather indemnified for what he may lack by faculties capable at first of supplying its place, and afterwards of raising him much above it, must accordingly begin with purely animal functions: thus seeing and feeling must be his first condition, which would be common to him and all other animals. To will, and not to will, to desire and to fear, must be the first, and almost the only operations of his soul, till new circumstances occasion new developments of his faculties.