There are many phenomena in different areas of human intellectual life that have been subsumed under the concept of unity and its relatives: integration, generalization, synthesis, unification and so on. Numerous authors have lobbied for one or another variety of the unity within traditional scientific disciplines (in mathematics, physics, psychology, etc.). Other have argued for the unity between the different natural sciences (for example, physics and biology) or between the natural sciences and mathematics. Still others have focused on forms of the unity between science and humanities. It seems that the scrutinizing these unity forms is a precondition of considering any meaningful form of the unity between science and art, science and other spiritual types of human activity.