This excerpt is presented as reproduced by Copernicus in the preface to De Revolutionibus: "Some think that the earth remains at rest. But Philolaus the Pythagorean believes that, like the sun and moon, it revolves around the fire in an oblique circle. Heraclides of Pontus and Ecphantus the Pythagorean make the earth move, not in a progressive motion, but like a wheel in rotation from west to east around its own center."

As soft wax is apt to take the stamp of the seal, so are the minds of young children to receive the instruction imprinted on them.

When Anaxagoras was told of the death of his son, he only said, "I knew he was mortal." So we in all casualties of life should say "I knew my riches were uncertain, that my friend was but a man." Such considerations would soon pacify us, because all our troubles proceed from their being unexpected.

It is wise to be silent when occasion requires, and better than to speak, though never so well.

There are two sentences inscribed upon the Ancient oracle... "Know thyself" and "Nothing too much"; and upon these all other precepts depend.

Rome was in the most dangerous inclination to change on account of the unequal distribution of wealth and property, those of highest rank and greatest spirit having impoverished themselves by shows, entertainments, ambition of offices, and sumptuous buildings, and the riches of the city having thus fallen into the hands of mean and low-born persons. So that there wanted but a slight impetus to set all in motion, it being in the power of every daring man to overturn a sickly commonwealth.

A human body in no way resembles those that were born for ravenousness; it hath no hawk's bill, no sharp talon, no roughness of teeth, no such strength of stomach or heat of digestion, as can be sufficient to convert or alter such heavy and fleshy fare . . . There is nobody that is willing to eat even a lifeless and a dead thing even as it is; so they boil it, and roast it, and alter it by fire and medicines, as it were, changing and quenching the slaughtered gore with thousands of sweet sauces, that the palate being thereby deceived may admit of such uncouth fare.