Full Idea
The mathematician rests content if every transition to a fresh judgement is self-evidently correct, without enquiring into the nature of this self-evidence, whether it is logical or intuitive.
Gist of Idea
Mathematicians just accept self-evidence, whether it is logical or intuitive
Source
Gottlob Frege (Grundlagen der Arithmetik (Foundations) [1884], §90)
Book Reference
Frege,Gottlob: 'The Foundations of Arithmetic (Austin)', ed/tr. Austin,J.L. [Blackwell 1980], p.102
A Reaction
Note the suggestion that there are two different sorts of self-evidence. But see Idea 1410. Frege presumably drifted into philosophy because he wasn't happy with this blissful ignorance.
Related Idea