The article explores the essence of the antinomy of love and suffering. Within the framework of the problem, the works of the Russian religious philosopher S. L. Frank turned out to be significant. The author analyzes the semantic content of love and suffering, which became possible when considering the concept of the metaphysics of the all-unity of the thinker. In the course of studying the problem, an aspect of the contradiction between the selected phenomena is revealed, which is based on a positive and negative assessment of the understanding of these sensations.