Ekaterina Yu. Zavershneva

Background. The problem of the unity of affect and intellect is central to cultural-historical psychology. However, the biographical and personal context of the formation of this idea in L.S. Vygotsky’s thought, as well as his practical application of Spinoza’s principles of transforming passions in his own life and scientific activity, warrant further exploration based on underexplored archival data.

Objective. To trace the evolution of L.S. Vygotsky’s personality through the prism of the unity of affect and intellect, demonstrating how B. Spinoza’s philosophical principles formed the foundation of his “peak psychology” and were applied by the scholar to overcome his own existential and personal crises.

Methods. Historical-psychological analysis, the biographical method, and content analysis of archival materials, including early poetic works, notebooks (such as the 1926 hospital notebook), and the correspondence of L.S. Vygotsky (with E. Kheifets, N.G. Morozova, A.R. Luria, and R.E. Levina).

Results. It has been established that the early (pre-psychological) period of Vygotsky’s life was characterized by the dominance of spontaneous, “Hamletian” affect and melancholy. The period of 1925–1926 at the Zakharyino hospital marked a turning point; there, hovering between life and death, the scientist achieved a feat of overcompensation: he subordinated his intense emotional state to a lofty scientific goal, thereby enabling him to lay the foundations of cultural-historical psychology by introducing the principle of sign mediation. In his mature years, Vygotsky interpreted will not as forceful suppression or mere arbitrariness, but as an “intelligent emotion” that uses the energy of affect as fuel for the intellect. This is vividly reflected in his strategies for helping loved ones overcome personal crises through the conscious articulation of thoughts and aspirations.

Conclusions. L.S. Vygotsky’s life path served as practical confirmation of his own theory. By transforming natural affect into a conscious “conceptualized affect,” he realized the Spinozist ideal of the “free man.” He achieved mastery over his own nature not through coercion, but through the development of “intelligent emotion,” love, and friendship. This allowed the scholar to attain inner freedom and courage in the face of severe illness, remaining faithful to his scientific and life mission until his final days.