The Noble Eightfold Path
- 1. right perspective, 2. right intention, 3. right speech, 4. right action, 5. right livelihood, 6. right effort, 7. right mindfulness, 8. right concentration
Note that the Eightfold Path is different than the Eight Precepts in Buddhism, which I do not like so much because they suggest that to become more [insightful in meditation], one should refrain from singing, dancing, and going to the theater! Source
Internal tranquility creates external peace. It leads to social peace through moral cultivation of individual minds. This is because the mind is the source of peace. If one has a skillful mind, then both speech and action are also skillful. A teaching of the Buddha called the "Knowledge Discourse" (Vijjā Sutta, SN 56.22) is a method of development for an individual's mind that can lead to internal tranquility.
Maurice O'Connell Walshe (translator)