“This intent concentration on in-and-out breathing, if cultivated and developed, is something peaceful and excellent, something perfect in itself and a pleasant way of living also.
Not only that, it dispels evil thoughts that have arisen and makes them vanish in a moment.
It is just as when, in the last month of the hot season, the dust and dirt fly up and suddenly a great rain lays it and makes it settle in a moment.” – Samyutta Nikaya V.321