Full Idea
At that time (c.1930) a concept of objective mathematical truth as opposed to demonstrability was viewed with greatest suspicion and widely rejected as meaningless.
Gist of Idea
Originally truth was viewed with total suspicion, and only demonstrability was accepted
Source
Kurt Gödel (works [1930]), quoted by Peter Smith - Intro to Gödel's Theorems 28.2
Book Reference
Smith,Peter: 'An Introduction to Gödel's Theorems' [CUP 2007], p.254
A Reaction
[quoted from a letter] This is the time of Ramsey's redundancy account, and before Tarski's famous paper of 1933. It is also the high point of Formalism, associated with Hilbert.