The Buddhist tradition gives a wide variety of descriptions of the Buddhist Path (magga) to liberation. The classical description is the Noble Eightfold Path, described in the Sutta Pitaka. This description is preceded by even older descriptions in the Sutta Pitaka, and elaborated in the various Buddhist traditions. A number of other paths have been developed and described within the various traditions.
A standard sequence of developments can be found in the Nikayas, which may predate the more stylised four noble truths. For example the Tevijja Sutra verse 40-75 (Dikha Nikaya 13):
The Noble Eightfold Path is widely known as the description of the Buddhist path. In the Sutta Pitaka it is summed up as follows:
The Blessed One said, "Now what, monks, is the Noble Eightfold Path? Right view, right resolve, right speech, right action, right livelihood, right effort, right mindfulness, right concentration.
The Atthakavagga, one of the oldest books of the Sutta Pitaka, contained in the Sutta Nipata, does not give a clear-cut goal such as Nirvana, but describes the ideal person. This ideal person is especially characterized by suddhi (purity) and santi (calmness).
Commentaries on the Atthakavagga, namely the Mahaniddesa and the commentary by Buddhaghosa, show the development of Buddhist ideas over time. Both commentaries place the Atthakavagga in their frame of reference, giving an elaborated system of thought far more complicated than the Atthakavagga itself.
The classical outline of the Theravada path to liberation are the Seven Purifications, as described by Buddhaghosa in the Visuddhimagga. These purifications are:
The "Purification by Knowledge and Vision" is the culmination of the practice, in four stages leading to liberation.
The emphasis in this system is on understanding the three marks of existence, dukkha, anatta, anicca. This emphasis is recognizable in the value that is given to vipassana over samatha, especially in the contemporary vipassana movement.