If the art of ship-building were in the wood, ships would exist by nature.
The least deviation from truth will be multiplied later.
The perversions are as follows: of royalty, tyranny; of aristocracy, oligarchy; of constitutional government, democracy.
Some men are just as sure of the truth of their opinions as are others of what they know.
The roots of education are bitter, but the fruit is sweet.
Neither by nature, then, nor contrary to nature do the virtues arise in us; rather we are adapted by nature to receive them, and are made perfect by habit.