Violent reaction against Eunomius, a lively debate waged against him - above all - Cappadocian Fathers, suggests how deeply the IV century fathers realized the danger of intellectualism in the knowledge of God. * * * St. Basil the Great (330-379) in their struggle against Eunomius criticizes him primarily in terms of philosophy, refuting his theory of knowledge. He decisively refutes the essential difference between object names and names generated by the intellect - (??? '??? ????? names that we define an object found in our thought;. But that does not mean that it is thinking was barren and did not correspond to any objective reality. What a body seems, at first glance, a simple but meditation gradually discovers in it the size, color, density, shape, and many other properties. This allows us to formulate concepts to penetrate, so , the full complexity of the data objects and give them names that express, or their quality, or their relationship with other objects;. and yet we can never exhaust the concepts of all the content of any substance always remains a unidentified 'residue', some existential basis, if we apply the modern term for thinking of St. Basil, something eludes all intellectual analysis. this means that there is no subject that would be comprehensible in its essence, is why it is so and not otherwise. Do not imagine that Basil the Great, which denies the possibility of knowledge of the essential things preached epistemological pessimism. He, on the contrary, opposes intellectualized and depleted world Eunomius world is extremely rich and inexhaustible mind: passive Substantiality revelation which God has imprinted in the hearts, he opposes all the efficiency and activity of human cognition and at the same time all its objectivity. And we perceive is real properties of objects, even if the names that we define them, do not express what they are in their essence.