Full Idea
The sign is conceivable only on the basis of the presence that it defers, and moving toward the deferred presence that it aims to reappropriate.
Gist of Idea
The sign is only conceivable as a movement between elusive presences
Source
Jacques Derrida (works [1990]), quoted by Simon Glendinning - Derrida: A Very Short Introduction 6
Book Reference
Glendinning,Simon: 'Derrida: a Very Short Intro' [OUP 2011], p.76
A Reaction
[Glendinning gives no source for this] I take the fundamental idea to be that meanings are dynamic, when they are traditionally understood as static (and specifiable in dictionaries).