It will be seen from the above that the absolute truth of the Mahayanists varies from a severely metaphysical conception, the indescribable thing in itself, to something very like an all-pervading benevolent essence which from time to time takes shape in a Buddha. And here we see how easy is the transition from the old Buddhism to a form of pantheism. For if we admit that the Buddha is a superhuman intelligence appearing from time to time according to a certain law, we add little to this statement by saying that the essence or spirit of the cosmos manifests itself from time to time as a Buddha. Only, such words as essence or spirit are not really correct. The world of individuals is the same as the highest truth, the same as the Dharma-kâya, the same as Nirvana. It is only through ignorance that it appears to be different and particularized. Ignorance, the essence of which consists in believing in the distinction between subject and object, is also called defilement and the highest truth passes through various stages of defilement ending with that where under the influence of egoism and passion the external world of particulars is believed to be everything. But the various stages may influence one another[114] so that under a higher influence the mind which is involved in subjectivity begins to long for Nirvana. Yet Nirvana is not something different from or beyond the world of experience; it does not really involve annihilation of the skandhas. Just as in the Advaita he who has the true knowledge sees that he himself and everything else is Brahman, so for the Mahayanist all things are seen _to be_ Nirvana, _to be_ the Dharma-kâya. It is sometimes[115] said that there are four kinds of Nirvana (_a_) absolute Nirvana, which is a synonym of the Dharma-kâya and in that sense universally present in all beings, (_b_) upadhiśesha-nirvâṇa, the state of enlightenment which can be attained during life, while the body with its limitations still remains, (_c_) anupadhiśesha-nirvâṇa, a higher degree of the same state attained after death when the hindrances of the body are removed, (_d_) Nirvana without abode or apratishṭhita-nirvâṇa. Those who attain to this understand that there is no real antithesis between Samsâra and Nirvana:[116] they do not seek for rest or emancipation but devote themselves to beneficent activity and to leading their fellows to salvation. Although these statements that Nirvana and Samsâra are the same are not at all in the manner of the older Buddhism, yet this ideal of disinterested activity combined with Nirvana is not inconsistent with the portrait of Gotama preserved in the Pali Canon.