Plato's three major criticisms of poetry are that it is not ethical, philosophical, or pragmatic. In other words, he was opposed to poetry from the standpoints of education, philosophy, and morality. Poetry seduces the reader into feeling unfavorable feelings. As a result, it breaks down moral barriers and encourages immoral behavior. Finally, poetry lacks any practical value and can therefore have no role in politics. Socrates uses poetry as an example when arguing that some things are good to do and others are not. For instance, he says that making money at any cost is not a good action because it is harmful to one's friends and family. Similarly, he argues that fighting injustice is good because it helps maintain justice in society. However, killing people unjustly is not good because it causes more problems than it solves. "The poet," Socrates says, "who tries to persuade by means of verse will be using a bad instrument; for what is intended by speech is achieved not by rhyme but by reason." In conclusion, poetry is without value except as an educational tool used by Plato to explain his views on ethics, politics, and philosophy.