Parmenides argued that true reality, or “being,” is singular, unchanging, and eternal. He believed that our sensory experiences of change or diversity are misleading, as change implies the non-existence of what is truly real. In his view, only what exists in a uniform, continuous, and immutable state—what he termed “being”—can be genuinely affirmed. Thus, any perception of flux or transformation is an illusion, distracting us from the fundamental, unalterable nature of reality.