Democtritus

Democritus was an ancient Greek philosopher who proposed that everything in the universe is made up of tiny, indivisible particles called atoms. He believed these atoms are eternal, unchangeable, and move in the void (empty space). His ideas laid the groundwork for modern atomic theory, suggesting that matter is composed of fundamental building blocks, which combine in different ways to form everything we see. While some of his ideas were speculative, Democritus's contributions helped shape our understanding of the nature of matter and the universe.