The core teaching, in one paragraph
The Buddha taught that suffering — dukkha — is intrinsic to ordinary life, that it is caused (by craving and aversion driven by misperception of the self), that it can end (the cessation is nirvāṇa), and that the way to that end is a path of practice covering ethics, meditation and wisdom. That's it. Everything else in the tradition — the schools, the rituals, the pure-land cosmology, the bodhisattva vow — is commentary, expansion, or skilful means.
The three vehicles
*Therav āda is the oldest surviving form — focused on the original suttas, the figure of the arhat (the one who reaches liberation through their own effort), and vipassanā* meditation. Predominant in Sri Lanka, Thailand, Myanmar, Laos and Cambodia.
*Mahāyāna is the second wave (1st century BCE onwards) — wider in scope, centred on the bodhisattva* who postpones their own liberation to help all beings. Its meditative offspring includes Chinese Chan and Japanese Zen. Predominant in China, Korea, Japan and Vietnam. The Western Mahāyāna teachers most present in the index are Thich Nhat Hanh and Pema Chödrön, both rooted in the bodhisattva tradition.
*Vajrayāna* — the diamond or thunderbolt vehicle — adds tantric methods, mantra practice, and visualisation. Predominant in Tibet, Bhutan, Mongolia and parts of India. The Tibetan teacher most familiar to Western audiences via popular media is the Dalai Lama; in the index, Pema Chödrön was trained in this lineage by Chögyam Trungpa.
Where to begin
For practice: Jon Kabat-Zinn's MBSR course is the secularised entry point. For Theravāda taste: Tara Brach and Jack Kornfield's *Power of Awareness*. For Mahāyāna: Thich Nhat Hanh on emptiness, signlessness and aimlessness or Br. Troi Duc Niem's reflection from Plum Village. For working with difficulty: Pema Chödrön's *When Things Fall Apart* or her course on awakening compassion.
Ram Dass — though shaped more directly by Hindu bhakti than by Buddhism — became one of the most beloved Western voices on the bodhisattva impulse. His Maharaji story about *only God* is a Buddhist-compatible non-dual moment by another name.
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