THE ORIGIN AND CESSATION OF SUFFERING
The second of the Four Noble Truths makes known the origin or cause of suffering, which the Buddha identifies as craving (tanh $\bar{a}$ ) in its three aspects: craving for sensual pleasures; craving for being, that is, for continued existence; and craving for nonbeing, that is, for personal annihilation. The third truth states the converse of the second truth, that with the elimination of craving the suffering that originates from it will cease without remainder.
The Buddha's discovery of the causal link between craving and suffering accounts for the apparent "pessimistic" streak that emerges in several suttas of the Majjhima Nikāya: in MN 13 with its disquisition on the dangers in sensual pleasures, form, and feeling; in MN 10 and MN 119 with their cemetery meditations; in MN 22, MN 54, and MN 75 with their shocking similes for sensual pleasures. Such teachings are part of the Buddha's tactical approach to guiding his disciples to liberation. By its own inherent nature craving springs up and thrives wherever it finds something that appears pleasant and delightful. It proliferates through mistaken perception - the perception of sense objects as enjoyable - and thus to break the grip of craving on the mind, exhortation is often not enough. The Buddha must make people see that the things they yearn for and frantically pursue are really suffering, and he does this by exposing the dangers concealed beneath their sweet and charming exteriors.
Although the second and third noble truths have an immediate psychological validity, they also have a deeper aspect brought to light in the suttas. The middle two truths as stated in the general formulation of the Four Noble Truths are actually telescoped versions of a longer formulation that discloses the origin and cessation of bondage in samsāra. The doctrine in which this expanded version of the two truths is set forth is called pațicca samuppāda, dependent origination. In its fullest statement the doctrine spells out the origination and cessation of suffering in terms of twelve factors connected together in eleven propositions. This formulation, laid down schematically, will be found at MN 38.17 in its order of arising and at MN 38.20 in its order of ceasing. MN 115.11 includes both sequences together preceded by a statement of the general principle of conditionality that underlies the applied doctrine. A more elaborate version giving a factorial analysis of each term in the series is presented at MN 9.21-66, and a version exemplified in the course of an individual life at MN 38.26-40. Condensed versions are also found, notably at MN 1.171, MN 11.16, and MN 75.24-25. The venerable Sāriputta quotes the Buddha as saying that one who sees dependent origination sees the Dhamma and one who sees the Dhamma sees dependent origination (MN 28.28).
According to the usual interpretation, the series of twelve factors extends over three lives and divides into causal and resultant phases. The gist of it can be briefly explained as follows. Because of ignorance (avijjā) - defined as non-knowledge of the Four Noble Truths - a person engages in volitional actions or kamma, which may be bodily, verbal, or mental, wholesome or unwholesome. These kammic actions are the formations (sankhārā), and they ripen in states of consciousness (viñ̃̃āna) first as the rebirth-consciousness at the moment of conception and thereafter as the passive states of consciousness resulting from kamma that matures in the course of a lifetime. Along with consciousness there arises mentality-materiality (nāmarūpa), the psychophysical organism, which is equipped with the sixfold base (salāyatana), the five physical sense faculties and mind as the faculty of the higher cognitive functions. Via the sense faculties contact (phassa) takes place between consciousness and its objects, and contact conditions feeling (vedanā). The links from consciousness through feeling are the products of past kamma, of the causal phase represented by ignorance and formations. With the next link the kammically active phase of the present life begins, productive of a new existence in the future. Conditioned by feeling, craving (tanh $\bar{a}$ ) arises, this being the second noble truth. When craving intensifies it gives rise to clinging (upädāna), through which one again engages in volitional actions pregnant with a renewal of existence (bhava). The new existence begins with birth (jāti), which inevitably leads to ageing and death (jarāmarana).
The teaching of dependent origination also shows how the round of existence can be broken. With the arising of true knowledge, full penetration of the Four Noble Truths, ignorance is eradicated. Consequently the mind no longer indulges in craving and clinging, action loses its potential to generate rebirth, and deprived thus of its fuel, the round comes to an end. This marks the goal of the teaching signalled. by the third noble truth, the cessation of suffering.