The Taittiriya-upanishad (II, 1-5), after having enumerated the Self consisting of food, the Self consisting of the vital airs, the Self consisting of mind, and the Self consisting of understanding, says, 'Different from this which consists of understanding is the other inner Self which consists of bliss.' Here the doubt arises whether the phrase, 'that which consists of bliss,' denotes the highest Brahman of which it had been said previously, that 'It is true Being, Knowledge, without end,' or something different from Brahman, just as the Self consisting of food, &c., is different from it.--The purvapakshin maintains that the Self consisting of bliss is a secondary (not the principal) Self, and something different from Brahman; as it forms a link in a series of Selfs, beginning with the Self consisting of food, which all are not the principal Self. To the objection that even thus the Self consisting of bliss may be considered as the primary Self, since it is stated to be the innermost of all, he replies that this cannot be admitted, because the Self of bliss is declared to have joy and so on for its limbs, and because it is said to be embodied. If it were identical with the primary Self, joy and the like would not touch it; but the text expressly says 'Joy is its head;' and about its being embodied we read, 'Of that former one this one is the embodied Self' (Taitt. Up. II, 6), i.e. of that former Self of Understanding this Self of bliss is the embodied Self. And of what is embodied, the contact with joy and pain cannot be prevented. Therefore the Self which consists of bliss is nothing but the transmigrating Soul.