2. Democritus
Perhaps among the most popular ancient philosophers in the world, Democritus, next on our list of top 10 ancient atheist philosophers and their quotes, played a very important role in the atomic theory of the universe. He was Leucippus’ student (most scholars cannot tell the two apart from their writings) and was also very interested in perception and knowledge. He also explained most of the world’s natural phenomena like thunder and lightning.
“Nothing exists except atoms and empty space; everything else is opinion.”
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