There are further four stages of dhyana called “Arūpa-vimoksha” which are practised by those who have passed beyond the last stage of dhyana. The first is to contemplate the infinity of space, not disturbed by the manifoldness of matter; the second is on the infinity of consciousness as against the first; the third is meant to go still further beyond the distinction of space and thought; and the fourth is to eliminate even this consciousness of non-distinction, to be thus altogether free from any trace of analytical intellection. Besides these eight Samāpatti (“coming together”) exercises, technically so called, the Buddha sometimes refers to still another form of meditation which is considered to be distinctly Buddhist. This is more or less definitely contrasted to the foregoing by not being so exclusively intellectual but partly affective, as it aims at putting a full stop to the operation of Samjñā (thought) and Vedita (sensation), that is, of the essential elements of consciousness. It is almost a state of death, total extinction, except that one in this dhyana has life, warmth, and the sense-organs in perfect condition. But in point of fact it is difficult to distinguish this Nirodha-vimoksha (deliverance by cessation) from the last stage of the Aruppa (or Arūpa) meditation, in both of which consciousness ceases to function even in its simplest and most fundamental acts. Whatever this was, it is evident that the Buddha like the other Indian leaders of thought endeavoured to make his disciples realise in themselves the content of Enlightenment by means of dhyana, or concentration. They were thus made to gradually progress from a comparatively simple exercise up to the highest stage of concentration in which the dualism of the One and the Many vanished even to the extent of a total cessation of mentation. Apart from these general spiritual exercises, the Buddha at various times told his followers to meditate on such objects[f43] as would make them masters of their disturbing passions and intellectual entanglements.