What are the questions of parmenides?

Parmenides, a pre-Socratic philosopher, primarily posed questions regarding the nature of existence and reality. His central inquiries revolve around the distinction between what is and what is not, challenging the validity of sensory perception and the idea of change. He questioned how something could come from nothing and argued for the concept of a singular, unchanging reality, asserting that change and multiplicity are mere illusions. Parmenides' work laid the groundwork for later philosophical discussions on being, knowledge, and the nature of reality.