Full Idea
The sophists assume that being Coriscus-in-the-Lyceum is different from being Coriscus-in-the-marketplace.
Gist of Idea
The sophists thought a man in the Lyceum is different from that man in the marketplace
Source
Aristotle (Physics [c.337 BCE], 219b19)
Book Reference
Aristotle: 'Physics Books III and IV', ed/tr. Hussey,Edward [OUP 1983], p.45
A Reaction
This is what has now been called 'Cambridge change', which is merely change in relations, with no intrinsic change. It is laughed at, but it is a phenomenon worth pointing out, as long as it is not mislabelled, or misunderstood.