Leucippus

Leucippus
Leucippus
Born	Early 5th century BCE Abdera or Miletus
Died	5th century BCE
Era	Pre-Socratic philosophy
School	Pre-Socratic philosophy: Atomism, Materialism
Main interests	Metaphysics
Notable ideas	Atomism
Influences Zeno of Elea
Influenced Democritus

Leucippus (/luːˈsɪpəs/; Greek: Λεύκιππος, Leúkippos; fl. 5th cent. BCE) is reported in some ancient sources to have been a philosopher who was the earliest Greek to develop the theory of atomism—the idea that everything is composed entirely of various imperishable, indivisible elements called atoms. Leucippus often appears as the master to his pupil Democritus, a philosopher also touted as the originator of the atomic theory. However, a brief notice in Diogenes Laertius’s life of Epicurus says that on the testimony of Epicurus, Leucippus never existed. As the philosophical heir of Democritus, Epicurus's word has some weight, and indeed a controversy over this matter raged in German scholarship for many years at the close of the 19th century. Furthermore, in his Corpus Democriteum,Thrasyllus of Alexandria, an astrologer and writer living under the emperor Tiberius (14–37 CE), compiled a list of writings on atomism that he attributed to Democritus to the exclusion of Leucippus. The present consensus among the world's historians of philosophy is that this Leucippus is historical. The matter must remain moot unless more information is forthcoming from the record.

Leucippus was most likely born in Miletus, although Abdera and Elea are also mentioned as possible birthplaces.

Leucippus was indeed a shadowy figure, as his dates are not recorded and he is often mentioned in conjunction with his more well-known pupil Democritus. It is therefore difficult to determine which contributions to an atomic theory come from Democritus and which come from Leucippus.

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