Bodhi (Pāli and lit. awakening) is a term applied in Buddhism to the experience of Awakening of Buddhas and Arahants. When used in a generic sense, a Buddha is generally considered to be a person who discovers the true nature of reality through (lifetimes of) spiritual cultivation, investigation of the various religious practices of his time, and meditation. This transformational discovery is called Bodhi, which literally means “awakening“, but is more commonly called “enlightenment“.

In Early Buddhism, Bodhi carries a meaning synonymous to Nirvana, using only some different metaphors to describe the experience, which implied the extinction of raga (greed), dosha (hate) and moha (delusion). In Theravada Buddhism, Bodhi and Nirvana carry the same meaning, that of being freed from craving, hate and delusion. The Arahant according to Theravada doctrine, has thus overcome greed, hatred, and delusion, attaining Bodhi. In Theravada Buddhism, the extinction of only greed and hatred, while a residue of delusion remains, is called Anagami.

Bodhi is attained when the Four Noble Truths are fully grasped, and all karma has reached cessation. Although pre-sectarian Buddhism does not have any mention of Paramitas, the later traditions of Theravada and Mahayana state that one also needs to fulfill the pāramitās to their highest levels. After attainment of Bodhi, it is believed one is freed from the compulsive cycle of saṃsāra: birth, suffering, death and rebirth, and attains the “highest happiness” (Nirvana, as described in the Dhammapada). Belief in self (ātmān, Pāli attā) has also been extinguished as part of the eradication of delusion, and Bodhi thus implies understanding of anattā (Sanskrit: Anatman).

General Understanding

Middle Way
The primary guiding principle of Buddhist practice is the Middle Way which was discovered by the Buddha prior to his enlightenment (bodhi). The Middle Way or Middle Path has several definitions:
1. It is often described as the practice of non-extremism; a path of moderation away from the extremes of self-indulgence and opposing self-mortification.
2. It also refers to taking a middle ground between certain metaphysical views, e.g. that things ultimately either exist or do not exist.
3. An explanation of the state of nirvana and perfect enlightenment where all dualities fuse and cease to exist as separate entities (see Seongcheol).

Refuge in the Three Jewels
Acknowledging the Four Noble Truths and making the first step in the Noble Eightfold Path requires taking refuge, as the foundation of one’s religious practice, in Buddhism’s Three Jewels (Sanskrit: Triratna or Ratna-traya, Pali: Tiratana).

The Three Jewels are:
* The Buddha (i.e., Awakened One). This is a title for those who attained Awakening similar to the Buddha and helped others to attain it. See also the Tathāgata and Śākyamuni Buddha. The Buddha could also be represented as the wisdom that understands Dharma, and in this regard the Buddha represents the perfect wisdom that sees reality in its true form.
* The Dharma: The teachings or law as expounded by the Buddha. Dharma also means the law of nature based on behavior of a person and its consequences to be experienced (action and reaction). It can also (especially in Mahayana Buddhism) connote the ultimate and sustaining Reality which is inseverable from the Buddha.
* The Sangha: This term literally means “group” or “congregation,” but when it is used in Buddhist teaching the word refers to one of two very specific kinds of groups: either the community of Buddhist monastics (bhikkhus and bhikkhunis), or the community of people who have attained at least the first stage of Awakening (Sotapanna (pali) — one who has entered the stream to enlightenment). According to some modern Buddhists, it also consists of laymen and laywomen, the caretakers of the monks, those who have accepted parts of the monastic code but who have not been ordained as monks or nuns.

According to the scriptures, The Buddha presented himself as a model, however, he did not ask his followers to have faith (Sanskrit śraddhā, Pāli saddhā) in his example of a human who escaped the pain and danger of existence. Instead, he continually encouraged them to put his teachings to the test and only accept what they could verify on their own. The Dharma, i.e. the teaching of the Buddha, offers a refuge by providing guidelines for the alleviation of suffering and the attainment of enlightenment. The Saṅgha (Buddhist Order of monks) provides a refuge by preserving the authentic teachings of the Buddha and providing further examples that the truth of the Buddha’s teachings is attainable.

Many Buddhists believe that there is no otherworldly salvation from one’s karma. The suffering caused by the karmic effects of previous thoughts, words and deeds can be alleviated by following the Noble Eightfold Path.

Sīla (Morality cultivation)
Śīla (Sanskrit) or sīla (Pāli) is usually translated into English as “morality”, “ethics”, “virtue” or “precept”. It is an action committed through the body, speech, or mind. It is karmic if it is volitional or an intentional effort. It is one of the three practices (sīla – samadhi – paññā) and the second pāramitā.

Śīla is the foundation of Samadhi/Bhāvana (Meditative cultivation) or mind cultivation. Keeping the precepts promotes not only the peace of mind of the cultivator, which is internally, but also peace in the community, which is externally. According to the Law of Kamma, keeping the precepts are meritorious and it acts as causes which would bring about peaceful and happy effects.

Samadhi/Bhāvana (Meditative cultivation)
In the language of the Noble Eightfold Path, samyaksamādhi is “right concentration”. The primary means of cultivating samādhi is meditation. Almost all Buddhist schools agree that the Buddha taught two types of meditation, viz. samatha meditation (Sanskrit: śamatha) and vipassanā meditation (Sanskrit: vipaśyanā). Upon development of samādhi, one’s mind becomes purified of defilement, calm, tranquil, and luminous.

Once the meditator achieves a strong and powerful concentration (jhāna, Sanskrit dhyāna), his mind is ready to penetrate and gain insight (vipassanā) into the ultimate nature of reality, eventually obtaining release from all suffering. The cultivation of mindfulness is essential to mental concentration, which is needed to achieve insight.
Samatha Meditation starts from being mindful of an object or idea, which is expanded to one’s body, mind and entire surroundings, leading to a state of total concentration and tranquility (jhāna) There are many variations in the style of meditation, from sitting cross-legged or kneeling to chanting or walking. The most common method of meditation is to concentrate on one’s breath, because this practice can lead to both samatha and vipassana.

In Buddhist practice, it is said that while samatha meditation can calm the mind, only vipassanā meditation can reveal how the mind was disturbed to start with, which is what leads to jñāna (Pāli ñāṇa knowledge), prajñā (Pāli paññā pure understanding) and thus can lead to nirvāṇa (Pāli nibbāna).

Prajñā (Wisdom)
Prajñā (Sanskrit) or paññā (Pāli) means wisdom that is based on a realization of dependent origination, The Four Noble Truths and Noble Eightfold Path.
Prajñā is the wisdom that is able to extinguish afflictions and bring about bodhi. It is spoken of as the principal means, by its enlightenment, of attaining nirvāṇa, through its revelation of the true nature of all things as dukkha (unsatisfactory), anicca (impermanence) and anatta (devoid of self).

Initially, prajñā is attained at a conceptual level by means of listening to sermons (dharma talks), reading, studying and sometimes reciting Buddhist texts and engaging in discourse. The Buddha taught dharma to his disciples mainly through the mean of discourse or sermon,[citation needed] many attaining nirvana upon hearing the Buddha’s discourse.

Once the conceptual understanding is attained, it is applied to daily life so that each Buddhist can verify the truth of the Buddha’s teaching at a practical level. Lastly, one engages in insight (vipassanā, Sanskrit vipaśyanā) meditation [citation needed] to attain such wisdom at intuitive level. It should be noted that one could theoretically attain nirvana at any point of practice, while listening to a sermon, while conducting business of daily life or while in meditation.