Sigmund Freud's notion of truth evolved from a factual conception into a relativistic method where the true and the false are defined both in relation to a conventional and bounded space (that of the cure) and the dynamic effects that "plausible" constructions might have on the psyche. Truth as an objective no longer remains "the fundamental rule of psychoanalysis" (1914g, pp. 147, 150). It inclines towards the notion of reality testing that demands that the subject partially abandon their illusions. Truth as an ideal is inseparable from psychoanalytic inquiry and is unattainable, except partially in the "nuclei" of truth present within individual and collective distortions.