Full Idea
The Eleatic tribe, which had its beginnings from Xenophanes and still earlier, proceed on the grounds that all things so-called are one.
Gist of Idea
The basic Eleatic belief was that all things are one
Source
report of Xenophanes (fragments/reports [c.530 BCE]) by Plato - The Sophist 242d
Book Reference
Plato: 'The Sophist', ed/tr. Bernadete,Seth [University of Chicago 1986], p.35