Full Idea
From an elementary proposition no other can be inferred.
Gist of Idea
Nothing can be inferred from an elementary proposition
Source
Ludwig Wittgenstein (Tractatus Logico-Philosophicus [1921], 5.134)
Book Reference
Wittgenstein,Ludwig: 'Tractatus Logico-Philosophicus (Pears)', ed/tr. Pears,D. /McGuinness,B. [RKP 1961], p.109
A Reaction
Russell was not so sure. This is the sort of remark that elicits from me the question that extravagent metaphysics also provokes - 'how on earth does he know what he claims to be true?'.
Related Ideas
Idea 21682 If a proposition is elementary, no other elementary proposition contradicts it [Wittgenstein]
Idea 21684 Atomic facts may be inferrable from others, but never from non-atomic facts [Russell]