Full Idea
All things are arranged around a single purpose.
Clarification
'Purpose' is the Greek word 'telos'
Gist of Idea
Everything is arranged around a single purpose
Source
Aristotle (Metaphysics [c.324 BCE], 1075a18)
Book Reference
Aristotle: 'Metaphysics', ed/tr. Lawson-Tancred,Hugh [Penguin 1998], p.386