While art can be sold for money, this is not typically considered to be its primary purpose. The main purpose of art is to express emotions, tell stories, or teach lessons.

Plato believed that art should imitate nature, and that the best art is that which most closely resembles the natural world.

Aristotle believed that the purpose of art is to provide pleasure, and that the best art is that which is most beautiful and harmonious.

Kant believed that the purpose of art is to create beauty, and that the best art is that which is most beautiful and sublime.

Dewey believed that the purpose of art is to create experiences, and that the best art is that which is most engaging and meaningful.

While art can be used to teach lessons, this is not typically considered to be its primary purpose in contemporary art theory.

The theory of art as a language suggests that the purpose of art is to communicate ideas, and that the best art is that which is most effective at communicating its message.

The theory of art as a form of play suggests that the purpose of art is to provide pleasure, and that the best art is that which is most enjoyable.

The theory of art as a form of therapy suggests that the purpose of art is to heal trauma, and that the best art is that which is most effective at helping people to process and heal their traumatic experiences.

The theory of art as a form of social commentary suggests that the purpose of art is to challenge conventions and to promote social change, and that the best art is that which is most effective at doing so.

The theory of art as a form of spiritual expression suggests that the purpose of art is to connect with the divine, and that the best art is that which is most effective at doing so.

The theory of art as a form of cultural expression suggests that the purpose of art is to create a sense of community, and that the best art is that which is most effective at doing so.

The theory of art as a form of political expression suggests that the purpose of art is to promote social change, and that the best art is that which is most effective at doing so.

The theory of art as a form of personal expression suggests that the purpose of art is to create a sense of self, and that the best art is that which is most effective at doing so.

The theory of art as a form of entertainment suggests that the purpose of art is to provide pleasure, and that the best art is that which is most entertaining.