Mind creates desire, asserts "Brihadaranyaka Upanishad", with its basis in pleasure. Eye is the cause of material wealth, because it is through sight that wealth is created states the Upanishad, while ears are spiritual wealth, because it is through listening that knowledge is shared. The Upanishad suggests in the dialogue between Yajnavalkya and Maitreyi, husband and wife, that one does not love an object for the sake of the object but for the sake of the subject, the Self (the soul of the other person).