It was through the feeling of wonder that men now and at first began to philosophize.

So we must lay it down that the association which is a state exists not for the purpose of living together but for the sake of noble actions.

That education should be regulated by law and should be an affair of state is not to be denied, but what should be the character of this public education, and how young persons should be educated, are questions which remain to be considered. As things are, there is disagreement about the subjects. For mankind are by no means agreed about the things to be taught, whether we look to virtue or the best life. Neither is it clear whether education is more concerned with intellectual or with moral virtue.

The proof that you know something is that you are able to teach it

A life of wealth and many belongings is only a means to happiness. Honor, power, and success cannot be happiness because they depend on the whims of others, and happiness should be self-contained, complete in itself.

The senses are gateways to the intelligence. There is nothing in the intelligence which did not first pass through the senses.

All men desire by nature to know.