english: It's either the little voice at the back of your head, or it's that gut feeling you get when you've done the right thing, so when you've picked the paper bag or when you've bought a fuel-efficient car.
non_english: Buď počujete hlas v hlave alebo cítite v kostiach, že robíte správnu vec, keď si vyberáte papierovú tašku alebo si kupujete úsporné auto.