If the sphere of reason is wholly unfettered, no knowledge can rest upon an unquestioned foundation, because even the most firmly held notions can only be regarded as valid “in principle” or “until further notice.” Otherwise they would relapse into dogma and become separate from the very sphere of reason which determines what validity is in the first place.

QUESTION: Does this imply that any foundational belief is inherently dogmatic? Worth probing what 'until further notice' knowledge looks like in practice.

Anthony Giddens, The Consequences of Moderni…, loc. 123