Full Idea
Those laws and those laws only have necessary truth which we are prepared to maintain, no matter what.
Gist of Idea
Necessary truths are those we will maintain no matter what
Source
C.I. Lewis (A Pragmatic Conception of the A Priori [1923], p.367)
Book Reference
Peirce,James,Dewey etc: 'Pragmatism - The Classic Writings', ed/tr. Thayer,H.S. [Hackett 1982], p.367
A Reaction
This bold and simple claim has famously been torpedoed by a well-known counterexample - that virtually every human being will cling on to the proposition "dogs have at some time existed" no matter what, but it clearly isn't a necessary truth.