In grave problems of history, such as the establishment of empires, the discovery and settlement of countries, or the rise and fall of dynasties, the knowledge of the truth or falsity of the legendary narrative will be of importance, because the value of history is impaired by the imputation of doubt. But it is not so in Freemasonry. Here there need be no absolute question of the truth or falsity of the legend. The object of the masonic legends is not to establish historical facts, but to convey philosophical doctrines. They are a method by which esoteric instruction is communicated, and the student accepts them with reference to nothing else except their positive use and meaning as developing masonic dogmas. Take, for instance, the Hiramic legend of the third degree. Of what importance is it to the disciple of Masonry whether it be true or false? All that he wants to know is its internal signification; and when he learns that it is intended to illustrate the doctrine of the immortality of the soul, he is content with that interpretation, and he does not deem it necessary, except as a matter of curious or antiquarian inquiry, to investigate its historical accuracy, or to reconcile any of its apparent contradictions. So of the lost keystone; so of the second temple; so of the hidden ark: these are to him legendary narratives, which, like the casket, would be of no value were it not for the precious jewel contained within. Each of these legends is the expression of a philosophical idea. But there is another method of masonic instruction, and that is by symbols. No science is more ancient than that of symbolism. At one time, nearly all the learning of the world was conveyed in symbols. And although modern philosophy now deals only in abstract propositions, Freemasonry still cleaves to the ancient method, and has preserved it in its primitive importance as a means of communicating knowledge. According to the derivation of the word from the Greek, "to symbolize" signifies "to compare one thing with another." Hence a symbol is the expression of an idea that has been derived from the comparison or contrast of some object with a moral conception or attribute. Thus we say that the plumb is a symbol of rectitude of conduct. The physical qualities of the plumb are here compared or contrasted with the moral conception of virtue, or rectitude. Then to the Speculative Mason it becomes, after he has been taught its symbolic meaning, the visible expression of the idea of moral uprightness.