How, monks, does the practitioner remain established in the observation of the Four Noble Truths?
A practitioner is aware, “This is suffering,” as it arises. One is aware, “This is the cause of suffering,” as it arises. One is aware, “This is the end of suffering,” as it arises. One is aware, “This is the path which leads to the end of suffering,” as it arises.
-Satipatthana-sutta, translated by Thich Nhat Hanh and Annabel Laity
From “Teachings of the Buddha,” edited by Jack Kornfield, 1993. Reprinted by arrangement with Shambhala Publications, Boston, www.shambhala.com.