Full Idea
It cannot be doubted that all sense perceptions are permeated with value judgements (useful and harmful - consequently, pleasant and unpleasant).
Gist of Idea
All sense perceptions are permeated with value judgements (useful or harmful)
Source
Friedrich Nietzsche (The Will to Power (notebooks) [1888], §505)
Book Reference
Nietzsche,Friedrich: 'The Will to Power', ed/tr. Kaufmann,W /Hollingdate,R [Vintage 1968], p.275
A Reaction
A thesis expanded by Charles Taylor ('Sources of the Self'). This is a very modern view, but also a very Greek view, which slices through the is/ought distinction.