Theravada Buddhism

Ajahn Brahm: Nibbana is not something that can be predictably acquired through sheer effort. Actually it more or less happens automatically, the more one lets go of doing, gives up the notion of a distinct 'I' and acts from the knowledge of the oneness of all beings and things. Out of these insights compassionate energy and happiness arises. Nibbana, the ultimate happiness.

The full title is the Dhammacakkappavattana Sutta, but it is widely known as the Dhammacakka Sutta. After attaining Enlightenment the Buddha was at first reluctant to teach the Dhamma that he had realised. He considered, "This Dhamma is profound and goes against the flow of sensual desire; most people are strongly attached to and immersed in sensual pleasures." However, he reasoned that some were not too strongly attached, and were already searching for truth. They would be able to understand it. First he thought to teach it to Ālāra Kālāma, who had taught him meditation to attain the realm of infinite consciousness, but devas told him that Ālāra had passed away only last week; and he realised this was true by his own direct knowledge. Next he thought about teaching Uddaka Rāmaputta, who had taught him meditation to attain the realm of neither perception nor non-perception, but devas told him that Uddaka had passed away the previous night; and he realised this was tr