Full Idea
The claim that all appearances are true makes all things relational. Hence the claim is shifted to all appearances being true relative to a subject, time, sense and context.
Gist of Idea
If truth is relative it is relational, and concerns appearances relative to a situation
Source
Aristotle (Metaphysics [c.324 BCE], 1011a20)
Book Reference
Aristotle: 'Metaphysics', ed/tr. Lawson-Tancred,Hugh [Penguin 1998], p.105
A Reaction
applies to Epicurus