Samatha · Pāli: samatha; Skt: śamatha

Samatha is the calming and unification of the mind: tranquillity cultivated through sustained, settled attention. The Vijjā-bhāgiya Sutta (AN 2.30) sets it beside its partner from the first line: “These two qualities have a share in clear knowing. Which two? Tranquillity (samatha) & insight (vipassana)” (trans. Ṭhānissaro Bhikkhu). Each does its own work. Tranquillity develops the mind, and “defiled by passion, the mind is not released”; insight develops discernment, and “defiled by ignorance, discernment does not develop”. The fruits are twinned: “from the fading of passion is there awareness-release. From the fading of ignorance is there discernment-release”.

That pairing matters, because calm and insight are easily taken for rival methods. Writing on where insight practice sits in the wider path, Ṭhānissaro Bhikkhu argues that the two “are not separate paths of practice, but instead are complementary ways of relating to the present moment”, and that “the proper path is one in which vipassana and samatha are brought into balance, each supporting and acting as a check on the other”. On his reading vipassanā “is not a meditation technique. It’s a quality of mind”, and each keeps the other honest: “Vipassana helps keep tranquillity from becoming stagnant and dull.”

So calm is not an end in itself. A gathered, steady mind is the condition for seeing clearly, which is why the early texts keep returning to the pair rather than choosing between them. For the practice itself, its objects and its stages, see our guide to samatha meditation.