It is farther related of the Pythagoreans, that they expelled from themselves lamentation, weeping, and every thing else of this kind; and that neither gain, nor desire, nor anger, nor ambition, nor any thing of a similar nature, became the cause of dissension among them; but that all the Pythagoreans were so disposed towards each other, as a worthy father is towards his offspring. This also is a beautiful circumstance, that they referred every thing to Pythagoras, and called it by his name, and that they did not ascribe to themselves the glory of their own inventions, except very rarely. For there are very few whose works are acknowledged to be their own. The accuracy too, with which they preserved their writings is admirable. For in so many ages, no one appears to have met with any of the commentaries of the Pythagoreans, prior to the time of Philolaus. But he first published those three celebrated books, which Dion the Syracusan is said to have bought, at the request of Plato, for a hundred mina. For Philolaus had fallen into a certain great and severe poverty; and from his alliance to the Pythagoreans, was a partaker of their writings. With respect also to opinion,[42] it is related that they spoke of it as follows: That it is the province of a stupid man to pay attention to the opinion of every one, and especially to that of the multitude. Far it belongs to a few only to apprehend and opine rightly; since it is evident that this pertains to the intelligent alone. But they are few. It is manifest therefore, that a power of this kind does not extend itself to the multitude. But it is also stupid to despise the opinion of every one. For it will happen that he who is so disposed will be unlearned and incorrigible. It is however necessary that he who is destitute of science should learn those things of which he is ignorant, and has no scientific knowledge. And it is likewise necessary that the learner should pay attention to the opinion of him who possesses science, and is able to teach. And universally, it is necessary that those young men who wish to be saved, should attend to the opinion of their elders, and of those who have lived well. But in the whole of human life there are certain ages (denominated by them as it is said _endedasmenæ_) which it is not in the power of any casual person to connect with each other. For they are expelled by each other, unless some one conducts a man from his birth, in a beautiful and upright manner. It is necessary therefore, when a child is educated well, and is formed to temperance and fortitude, that a great part of his education should be given to the age of adolescence [which is that of a lad]. In a similar manner also, when a lad is formed to temperance and fortitude, it is necessary that a great part of his education should be transferred to the age of manhood. For that which happens to the multitude is absurd and ridiculous. For they fancy it is requisite that boys should be