Full Idea
If all things partake of ideas, must either everything be made of thoughts and everything thinks, or everything is thought, and so can't think?
Gist of Idea
If things partake of ideas, this implies either that everything thinks, or that everything actually is thought
Source
Plato (Parmenides [c.366 BCE], 132c)
Book Reference
Plato: 'Plato IV (Cratylus,Parmenides,Hippias Maj, Min)', ed/tr. Fowler,H.N. [Harvard Loeb 1926], p.219