Since men have existed, they have always had science in the plainest and largest sense of the word. Science, as the sum of all human information, has always been in existence; and without it life is not conceivable, and there is no necessity whatever either to attack or to defend it. But the fact is this, that the reason of this knowledge is so various, so much information of all kinds enters into it, from information how to obtain iron up to the knowledge about movements of the celestial bodies, that man would be lost among all this varied information if he had no clew to help him to decide which of all these kinds of information is more important, and which less. Therefore, the highest wisdom of men has always consisted in finding out the clew whereby to arrange the information of men, and to decide what kinds of information are more, and what are less, important. This which has directed all other knowledge, men have always called science in the strictest sense of the word. Such science has always been, up to the present time, in human societies which have left the savage state behind them. Since mankind has existed teachers have appeared in every nation to form science in this strict sense,--the science about what it is most necessary for men to know. The object of this science has always been the inquiry as to what was the destiny, and therefore the true welfare, of each man and of all men. This science has served as a clew to determine the importance and the expression of all other sciences. Such information and art as co-operated with the science of man's destiny and welfare were considered highest in public opinion. Such was the science of Confucius, Buddha, Moses, Socrates, Christ, Mohammed,--science such as it has been understood by all men save our own circle of so-called educated people. Such a science has not only always occupied the first place, but it is the one science which has determined the importance of other sciences. And this, not at all because so-called learned men of our time imagine that it is only deceitful priests and teachers of this science who have given it such an importance, but because, as, indeed, everyone can learn by his own inward experience, without the science of man's destiny and welfare, there cannot be any determining of other values, or any choice of art and science for man. And, therefore, there cannot be any study of science, for there are _innumerable_ quantities of subjects to which science may be applied. I italicize the word innumerable, as I use it in its exact value.