“Knowledge which is acquired under compulsion has no hold on the mind. Therefore do not use compulsion, but let early education be a sort of amusement; you will then be better able to discover the child's natural bent.”

“Bodily exercise, when compulsory, does no harm to the body; but knowledge which is acquired under compulsion obtains no hold on the mind.”

“Do not train a child to learn by force or harshness; but direct them to it by what amuses their minds, so that you may be better able to discover with accuracy the peculiar bent of the genius of each.”

“It's not at all uncommon to find a person's desires compelling him to go against his reason, and to see him cursing himself and venting his passion on the source of the compulsion within him. It's as if there were two warring factions, with passion fighting on the side of reason. But I'm sure you won't claim that you had ever, in yourself or in anyone else, met a case of passion siding with his desires against the rational mind, when the rational mind prohibits resistance.”

“True opinions are a fine thing and do all sorts of good so long as they stay in their place; but they will not stay long. They run away from a man's mind, so they are not worth much until you tether them by working out the reason. Once they are tied down, they become knowledge, and are stable.”

“The rhetorician need not know the truth about things; he has only to discover some way of persuading the ignorant that he has more knowledge than those who know.”

“They say that to do injustice is, by nature, good; to suffer injustice, evil, but that the evil is greater than the good. And so when men have both done and suffered injustice and have had experience of both, not being able to avoid the one and obtain the other, they think that they had better agree among themselves to have neither; hence there arise laws and mutual covenants, and that which is ordained by law is termed by them lawful and just. This they affirm to be the origin and nature of justice, it is a mean or compromise, between the best of all, which is to do injustice and not be punished, and the worst of all, which is to suffer injustice without the power of retaliation, and justice, being at a middle point between the two, is tolerated not as a good, but as the lesser evil, and honored by reason of the inability of me to do injustice. For no man who is worthy to be called a man would ever submit to such an agreement if he were able to resist; he would be mad if he did.”