Full Idea
If a sign is useless it is meaningless. That is the point of Occam's maxim.
Clarification
Ockham's maxim is his famous 'Razor' - "do not multiply entities beyond necessity"
Gist of Idea
If a sign is useless it is meaningless; that is the point of Ockham's maxim
Source
Ludwig Wittgenstein (Tractatus Logico-Philosophicus [1921], 3.328)
Book Reference
Wittgenstein,Ludwig: 'Tractatus Logico-Philosophicus (Pears)', ed/tr. Pears,D. /McGuinness,B. [RKP 1961], p.16