"Leucippus (/lu\u02D0\u02C8s\u026Ap\u0259s/; Greek: \u039B\u03B5\u03CD\u03BA\u03B9\u03C0\u03C0\u03BF\u03C2, Leukippos; fl. 5th century BCE) is reported in some ancient sources to have been a philosopher who was the earliest Greek to develop the theory of atomism \u2014 the idea that everything is composed entirely of various imperishable, indivisible elements called atoms. The name Leucippus is often associated as master to pupil with that of Democritus, the philosopher who was also touted as the originator of the atomic theory."@en . . . . "0005Z"^^ . . . . . "Leucippus"@en . "0005Z"^^ . "Ancient Greek scholar" . . . . .