The document discusses different types of subjects in art and how artists represent them. It defines representational or objective art as having subjects like people, objects, scenes or events, while non-representational art does not depict identifiable subjects. Most contemporary artists use non-objective styles that appeal directly to the senses through color and form rather than representing images. Common sources of subjects include nature, people, history, legends, religion, and an artist's dreams or imagination. Artists may present subjects through styles like realism, abstraction, symbolism, or expressionism to convey their intended messages.