How does one say "it's the principle of the thing", in particular for when giving feedback.
For example, it's not the 1$ over change but the principle of the matter. (as in the one dollar doesn't really matter but the principle of being overcharged is what is at issue).
I took a look at ALC and it gave me 原則{げんそく} and 基礎{きそ} but these don't really seem to fit the definition very well.