Full Idea
If the truth of a proposition does not follow from the fact that it is self-evident to us, then its self-evidence in no way justifies our belief in its truth.
Gist of Idea
If the truth doesn't follow from self-evidence, then self-evidence cannot justify a truth
Source
Ludwig Wittgenstein (Tractatus Logico-Philosophicus [1921], 5.1363), quoted by Robin Jeshion - Frege's Notion of Self-Evidence 4
Book Reference
-: 'Mind' [-], p.972
A Reaction
Frege seems to have taken self-evidence as intrinsic justification, but Wittgenstein seems to demand a supporting inference. But what is it all based on? Stipulative definitions?