Freud's greatest contribution lies in cracking the Enlightenment image of the human being as a "rational, conscious self." His insight that much of behavior is driven by unconscious drives, conflicts, and repressions has had a wide-ranging impact across psychology, psychiatry, cultural criticism, literature, and film theory. Even after critical reassessment, psychoanalysis remains the cornerstone of modern psychotherapy.

Separation from the persona — distinguishing one's social role from the true self and not identifying with the mask.

Integration of the shadow — recognizing and accepting the dark side of the self that has been denied and repressed. Without this, individuation cannot proceed.

Integration of anima / animus — bringing into consciousness the contrasexual principle within (the feminine in the man, the masculine in the woman) and withdrawing its projections.

Centering on the Self — moving from ego-centered to Self-centered. The experience of a wholeness that transcends the individual.

Kretschmer's most important insight was the claim that there is no qualitative break between healthy temperament and mental illness; they exist along a continuum (a spectrum). Between "cyclothymia" and "manic-depressive illness" there is a continuous distribution from mild mood fluctuation to severe manic-depression. This view can be regarded as a forerunner of the dimensional diagnostic models in modern psychiatry (such as the dimensional approach in DSM-5).

On the other hand, the direct correlation between physique and temperament receives weak support in modern research, and there are many methodological criticisms. Yet the typological approach he introduced — viewing normal and abnormal as a continuum and emphasizing constitutional predispositions — has had a lasting influence on psychiatry.

Kępiński conceived human values as a hierarchy. At the base lie biological values (survival, pleasure, the avoidance of pain). Above them are emotional values (love, belonging, dignity), then cognitive values (truth, knowledge, understanding), and at the top existential values (meaning, freedom, transcendence).

Many mental illnesses can be understood as distortions of this hierarchy — excessive fixation on biological values, the hollowing-out of emotional values, the loss of existential values. Treatment, Kępiński holds, consists in supporting the patient's reconstruction of the value system.

Kępiński died young, at 54, of leukemia. Yet his theory of information metabolism directly influenced Aušra Augustinavičiūtė of Lithuania and was adopted as the central framework of Socionics theory.

His theory also retains a prescient significance in our own age, in which artificial intelligence, cognitive science, and information theory are being connected to psychiatry. The insight that "the human being is an entity that metabolizes information" remains valid today as a conceptual framework bridging neuroscientific findings and phenomenological understanding.

PoLR is not merely "something one is bad at"; it is a deeper structural property. A person who shows ample tolerance to ordinary stimuli will, in the PoLR domain, exhibit a disproportionate reaction (suffering, dysfunction, defensive behavior) even to a very small stimulus. This asymmetry is what distinguishes PoLR from mere "low ability."

Metaphorically: the skeleton as a whole is robust, but a particular point is structurally weak, and pressure on that point alone causes a fracture. Equivalent pressure on other parts produces nothing.