Full Idea
There is no original supreme principle that is self-evident and convincing; nor, if there were, could we advance a step beyond it, but by those very faculties of which sceptics are supposed to be already diffident.
Gist of Idea
There is no certain supreme principle, or infallible rule of inference
Source
David Hume (Enquiry Conc Human Understanding [1748], XII.I.116)
Book Reference
Hume,David: 'Enquiries Conc. Human Understanding, Morals', ed/tr. Selby-Bigge/Nidditch [OUP 1975], p.150
A Reaction
This I take to be the chief exponent of empirical foundationalism attacking rational foundationalism. The problem of 'advancing beyond' basic beliefs is also a problem for Hume's position.