I heard from my Master that ulterior motives [in serving G‑d] are a complete structure,⁴⁶ and create a real person who will torment you. Tzafnah Paneach, p. 18a

footnotes: ⁴⁶ Literally, a “full stature” (קומה שלימה), implying that ulterior motives have all the elements of a body, a “head,” “body,” and “limbs.”