Life in the true sense is perceiving or thinking.

...for all men do their acts with a view to achieving something which is, in their view, a good.

Those that know, do. Those that understand, teach.

The true friend of the people should see that they be not too poor, for extreme poverty lowers the character of the democracy.

Now that practical skills have developed enough to provide adequately for material needs, one of these sciences which are not devoted to utilitarian ends [mathematics] has been able to arise in Egypt, the priestly caste there having the leisure necessary for disinterested research.

Democracy arose from men's thinking that if they are equal in any respect they are equal absolutely.

It is Homer who has chiefly taught other poets the art of telling lies skillfully.