Full Idea
Thirteenth mode: everything is always perceived in relation to something else.
Gist of Idea
Everything is perceived in relation to another thing (Mode 13)
Source
report of Agrippa (fragments/reports [c.60]) by Diogenes Laertius - Lives of Eminent Philosophers 09.Py.10
Book Reference
Diogenes Laertius: 'Diogenes Laertius', ed/tr. Yonge,C.D. [Henry G. Bohn 1853], p.413