Final answer:
Plato, the ancient Greek philosopher, presented his ideas through dialogues, where he engaged in conversations with others to construct a philosophical system encompassing various subjects such as nature, human mind, and ethics. He believed that the material world we perceive is an illusion and that true philosophers use reason to comprehend underlying ideas and forms.
Step-by-step explanation:
Plato, the ancient Greek philosopher, presented his ideas through dialogues. He wrote numerous dialogues featuring Socrates engaged in conversations with others, where he constructed a philosophical system encompassing various subjects such as nature, human mind, and ethics. Plato believed that the material world we perceive is an illusion and that true philosophers use reason to comprehend the ideas and forms underlying the universe.