finality as the basic principle ofLink of reason and understanding

Kant spots aspects for understanding of the world that any aspect to the faculty that is unique in the human soul, Such as cognitive faculty, faculty of pleasure and pain and the faculty of desire. Each these faculties belong to source of cognition of nomothetic of faculty under itself, namely understanding, reason and judgment. Also each these faculties though in respect of employment are different other faculties. But the principle that gives unity all of them, link to each other. Kant wants relation between undrestanding and reason justifies by judgment and its basic principle, namely finality. We show in this paper with respect to role that principle performs in kant's thought, we can not spot cognitive faculties of human as independent island but we should confirm accretion them anyhow