In Hinduism, Brahman (; ब्रह्मन) connotes the highest Universal Principle, the Ultimate Reality in the universe. In major schools of Hindu philosophy it is the material, efficient, formal and final cause of all that exists. It is the pervasive, genderless, infinite, eternal truth and bliss which does not change, yet is the cause of all changes. Brahman as a metaphysical concept is the single binding unity behind the diversity in all that exists in the universe.