Unfortunately, most of his work were destroyed in the middle ages. But many consider him as the "father of modern science." He's remembered for his atomic theory of the universe and notably for his work in mathematics. read more
Democritus advanced the hypothesis that all matter was made up ultimately of microscopic, indivisible particles called atoms (meaning indivisible, unsliceable), and that when you cut something, you were merely finding the spaces between the atoms. read more