Full Idea
I think Wittgenstein is right when he says (in the 'Tractatus') that logic consists wholly of tautologies.
Gist of Idea
Wittgenstein is right that logic is just tautologies
Source
report of Ludwig Wittgenstein (Tractatus Logico-Philosophicus [1921]) by Bertrand Russell - My Philosophical Development Ch.10
Book Reference
Russell,Bertrand: 'My Philosophical Development' [Routledge 1993], p.88
A Reaction
Despite Russell's support, I find this hard to accept. While a 'pure' or 'Platonist' logic may be hard to demonstrate or believe, I have a strong gut feeling that logic is more of a natural phenomenon than a human convention.