Every one will admit that all the evils in the world are produced by selfish desire. This is not difficult to understand. But how this desire, ‘thirst’, can produce re-existence and re-becoming (ponobhavikā) is a problem not so easy to grasp. It is here that we have to discuss the deeper philosophical side of the Second Noble Truth corresponding to the philosophical side of the First Noble Truth. Here we must have some idea about the theory of karma and rebirth.

There are four Nutriments (āhāra) in the sense of ‘cause’ or ‘condition’ necessary for the existence and continuity of beings: (1) ordinary material food (kabaliṅkārāhāra), (2) contact of our sense-organs (including mind) with the external world (phassāhāra), (3) consciousness (viññānāhara) and (4) mental volition or will (manosañcetanāhāra).

Of these four, the last mentioned ‘mental volition’ is the will to live, to exist, to re-exist, to continue, to become more and more. It creates the root of existence and continuity, striving forward by way of good and bad actions (kgsalākxalakamma). It is the same as ‘Volition’ (cetanā). We have seen earlier that volition is karma, as the Buddha himself has defined it. Referring to ‘Mental volition’ just mentioned above the Buddha says : ‘When one understands the nutriment of mental volition one understands the three forms of ‘thirst’ (taṇhā).’ Thus the terms ‘thirst’, ‘volition’, ‘mental volition’ and ‘karma’ all denote the same thing: they denote the desire, the will to be, to exist, to re-exist, to become more and more, to grow more and more, to accumulate more and more. This is the cause of the arising of dukkha, and this is found within the Aggregate of Mental Formations, one of the Five Aggregates which constitute a being.

Here is one of the most important and essential points in the Buddha’s teaching. We must therefore clearly and carefully mark and remember that the cause, the germ, of the arising of dukkha is within dukkha itself, and not outside; and we must equally well remember that the cause, the germ, of the cessation of dukkha, of the destruction of dukkha, is also within dukkha itself, and not outside. This is what is meant by the well-known formula often found in original Pali texts: ‘Whatever is of the nature of arising, all that is of the nature of cessation.’ A being, a thing, or a system, if it has within itself the nature of arising, the nature of coming into being, has also within itself the nature, the germ, of its own cessation and destruction. Thus dukkha (Five Aggregates) has within itself the nature of its own arising, and has also within itself the nature of its own cessation.