Full Idea
Belief is already present in every sense impression going back to the very moment it begins: a kind of Yes-saying first intellectual activity!
Gist of Idea
An affirmative belief is present in every basic sense impression
Source
Friedrich Nietzsche (Unpublished Notebooks 1884-85 [1884], 25[168])
Book Reference
Nietzsche,Friedrich: 'Fragments from 1884-85 (v 15)', ed/tr. Loeb,P.S./Tinsley,D.F. [Stanford 2022], p.49
A Reaction
He seems right that there is an intrinsic commitment to believing sense impressions, even in animals. Presumably more of a default setting than an intellectual choice.