Pleasure causes us to do base actions and pain causes us to abstain from doing noble actions.

Experience has shown that it is difficult, if not impossible, for a populous state to be run by good laws.

The aim of education is to make the pupil like and dislike what he ought....The little human animal will not at first have the right responses. It must be trained to feel pleasure, liking, disgust, and hatred at those things which really are pleasant, likable, disgusting, and hateful.

In part, art completes what nature cannot elaborate; and in part it imitates nature.

We are better able to study our neighbours than ourselves, and their actions than our own.

The law does not expressly permit suicide, and what it does not permit it forbids.

The saying of Protagoras is like the views we have mentioned; he said that man is the measure of all things, meaning simply that that which seems to each man assuredly is. If this is so, it follows that the same thing both is and is not, and is bad and good, and that the contents of all other opposite statements are true, because often a particular thing appears beautiful to some and ugly to others, and that which appears to each man is the measure