According to Kant "... nothing can protect us from a complete departure from our idea of ​​duty and preserve in the soul a well-founded respect for the law of duty if not the clear belief that, even if there have never been actions issued from such a pure source, the question here is not whether this or that happened, but that reason by itself and independently of all experience commands what must happen . (Kant, page 20 (lines 407-412)). Kant underlines that duty is not performed according to ends, but according to what is fundamentally good