Plato believed that art should strive to imitate the forms of the ideal world, which are perfect and unchanging.

Aristotle believed that art is a form of mimesis (imitation), catharsis (emotional release), and techne (skill or craft).

Kant argued that art is a form of disinterested pleasure, meaning that it is enjoyed for its own sake, rather than for any practical or moral purpose.

The Romantics believed that art should be an expression of the individual artist's unique emotions and experiences.

Duchamp's readymades, found objects, and rejection of originality challenged traditional notions of what constitutes art.

The institutional theory of art defines art as whatever is recognized as art by the art world, which includes museums, galleries, critics, and artists.

The definition of art is a complex and multifaceted issue that involves both objective and subjective factors.

While beauty, truth, and originality are often associated with art, goodness is not a necessary characteristic.

Art can serve a variety of purposes, including pleasing the senses, expressing emotions, and communicating ideas.

Art can be seen as a universal language, a reflection of culture, and a form of self-expression.

The value of art is subjective and personal, and varies from person to person.

The definition of art is evolving and dynamic, and changes over time and across cultures.

Art is a necessary part of human life, as it allows us to express ourselves, communicate with others, and make sense of the world around us.

The future of art is a combination of bright and bleak elements, as it faces challenges such as climate change and economic inequality, but also has the potential to continue to inspire and uplift humanity.

The definition of art is a complex and multifaceted issue that is open to debate and interpretation, and may never be definitively answered.