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In existographies, Leucippus (2455-2405 BE) (c.500-450 BCM) (IQ:180|#124↑) (PR:2,163|65AE / philosopher:135) (GCE:10) (ACR:18) (FA:7) (GPhE:#) (CR:214) (LH:19) (TL:233|#35) was a Greek physicist and philosopher, noted for []


In 2,415 BE [+c.460BC], Leucippus, in reaction to Parmenides’ 485BC denial of the void, was said to have derived or initiated atomic theory.



Leucippus influenced: Democritus.


Quotes | On

The following are quotes on Leucippus:

“The members of this school, and particularly the earliest, who were contemporaries of Pythagoras and young students of his in his old age, Philolaus and Eurytus … Leucippus and Alcmaeon.”
Iamblichus (c.305), Life of Pythagoras (pg. 104) [1]

Quotes | By

The following are quotes by Leucippus:

“Nothing happens in vain, but everything from reason and by necessity.”
— Leucippus (c.460BC), On Mind (Fragment L1); cited (Ѻ) by Johannes Stobaeus (c.520AD) in Book of Selections (1.4.7c)[1]
“I refuse to believe that the sun, moon, and stars are living beings.”
— Leucippus (c.460BC), Fragment #1; cited by Erwin Schrodinger (1949) in his “Do Electrons Think” talk[2]
Atoms are always in motion in space [void].”
— Leucippus (470BC), fragment #3; cited by Democritus (420BC) in Pay fragment #48[3]

End matter


  1. 1.0 1.1 Taylor, C.C.W. (1999). The Atomists: Leucippus and Democritus: Fragments: a Text and Translation with a Commentary by C.C.W. Taylor (vain, pgs. 3, 93, 189; Leucippus school, pg. 54). University of Toronto Press.
  2. Schrodinger, Erwin. (1949). “Do Electrons Think?” (YT)(Ѻ), BBC talk.
  3. Democritus. (420BC). Fragments (editor: Rex Pay) (#:1-49) (txt), HumanisticTexts.org, 2005.

External links

Theta Delta ics T2.jpg