It is evident, then, that science, for all its contempt for fixed schemes of happiness, will eventually accomplish with certainty what philosophy--which most commonly swims into the ken of the average man as morality--is now trying to do in a manner that is not only crude and unreasonable, but also necessarily unsuccessful. In a word, just so soon as man's store of knowledge grows so large that he becomes complete master of the natural forces which work toward his undoing, he will be perfectly happy. Now, Nietzsche believed, as we have seen in past chapters, that man's instinctive will to power had this same complete mastery over his environment as its ultimate object, and so he concluded that the will to power might be relied upon to lead man to the truth. That is to say, he believed that there was, in every man of the higher type (the only type he thought worth discussing) an instinctive tendency to seek the true as opposed to the false, that this instinct, as the race progressed, grew more and more accurate, and that its growing accuracy explained the fact that, despite the opposition of codes of morality and of the iron hand of authority, man constantly increased his store of knowledge. A thought, he said, arose in a man without his initiative or volition, and was nothing more or less than an expression of his innate will to obtain power over his environment by accurately observing and interpreting it. It was just as reasonable, he said, to say _It_ thinks as to say _I_ think,[6] because every intelligent person knew that a man couldn't control his thoughts. Therefore, the fact that these thoughts, in the long run and considering the human race as a whole, tended to uncover more and more truths proved that the will to power, despite the danger of generalizing from its manifestations, grew more and more accurate and so worked in the direction of absolute truth. Nietzsche believed that mankind was ever the slave of errors, but he held that the number of errors tended to decrease. When, at last, truth reigned supreme and there were no more errors, the superman would walk the earth.