In fact, the Eastern civilization is mostly concerned with the inner and spiritual aspects of living while the Western civilization includes the outer and external features of life. Therefore, the connection of these two, which results in looking up to one another in order to learn and improve, complements each of them in a different way. It is necessary to point out that the Eastern and Western civilizations are just taken as examples to explain the unification of cultures. This fact extends to the Northern, Southern, or any of the current civilization of the world.

360 Doctrines and Comprehensive Theories - Union of Civilizations