Before a man undertakes to learn any thing whatever, he must make up his mind that that branch of knowledge is of weight to him, and of more weight and importance than the countless other objects of study with which he is surrounded. Before undertaking the study of any thing, a man decides for what purpose he is studying this subject, and not the others. But to study every thing, as the men of scientific science in our day preach, without any idea of what is to come out of such study, is downright impossible, because the number of subjects of study is _endless_; and hence, no matter how many branches we may acquire, their acquisition can possess no significance or reason. And, therefore, in ancient times, down to even a very recent date, until the appearance of scientific science, man's highest wisdom consisted in finding that guiding thread, according to which the knowledge of men should be classified as being of primary or of secondary importance. And this knowledge, which forms the guide to all other branches of knowledge, men have always called science in the strictest acceptation of the word. And such science there has always been, even down to our own day, in all human communities which have emerged from their primal state of savagery. Ever since mankind has existed, teachers have always arisen among peoples, who have enunciated science in this restricted sense,--the science of what it is most useful for man to know. This science has always had for its object the knowledge of what is the true ground of the well-being of each individual man, and of all men, and why. Such was the science of Confucius, of Buddha, of Socrates, of Mahomet, and of others; such is this science as they understood it, and as all men--with the exception of our little circle of so-called cultured people--understand it. This science has not only always occupied the highest place, but has been the only and sole science, from which the standing of the rest has been determined. And this was the case, not in the least because, as the so-called scientific people of our day think, cunning priestly teachers of this science attributed to it such significance, but because in reality, as every one knows, both by personal experience and by reflection, there can be no science except the science of that in which the destiny and welfare of man consist. For the objects of science are _incalculable_ in number,--I undermine the word "incalculable" in the exact sense in which I understand it,--and without the knowledge of that in which the destiny and welfare of all men consist, there is no possibility of making a choice amid this interminable multitude of subjects; and therefore, without this knowledge, all other arts and branches of learning will become, as they have become among us, an idle and hurtful diversion.