(9) Now Pythagoras made an epitome of the statements on righteousness in Moses, when he said, "Do not step over the balance;" that is, do not transgress equality in distribution, honouring justice so.

(24) Pythagoras taught that friendship was the truest and nearest perfect of all relationships. He declared that in Nature there was a friendship of all for all; of gods for men; of doctrines one for another; of the soul for the body; of the rational part for the irrational part; of philosophy for its theory; of men for one another; of countrymen for one another; that friendship also existed between strangers, between a man and his wife, his children, and his servants. All bonds without friendship were shackles, and there was no virtue in their maintenance. Pythagoras believed that relationships were essentially mental rather than physical, and that a stranger of sympathetic intellect was closer to him than a blood relation whose viewpoint was at variance with his own. Pythagoras defined knowledge as the fruitage of mental accumulation. He believed that it would be obtained in many ways, but principally through observation. Wisdom was the understanding of the source or cause of all things, and this could be secured only by raising the intellect to a point where it intuitively cognized the invisible manifesting outwardly through the visible, and thus became capable of bringing itself en rapport with the spirit of things rather than with their forms. The ultimate source that wisdom could cognize was the Monad, the mysterious permanent atom of the Pythagoreans.

(19) Pythagoras was not an extremist. He taught moderation in all things rather than excess in anything, for he believed that an excess of virtue was in itself a vice. One of his favorite statements was: "We must avoid with our utmost endeavor, and amputate with fire and sword, and by all other means, from the body, sickness; from the soul, ignorance; from the belly, luxury; from a city, sedition; from a family, discord; and from all things, excess." Pythagoras also believed that there was no crime equal to that of anarchy.