“Bhikkhus, there are these Four Noble Truths. What four? The noble truth of suffering, the noble truth of the origin of suffering, the noble truth of the cessation of suffering, the noble truth of the way leading to the cessation of suffering. These are the Four Noble Truths.
“Of these Four Noble Truths, bhikkhus, there is a noble truth that is to be fully understood; there is a noble truth that is to be abandoned; there is a noble truth that is to be realized; there is a noble truth that is to be developed.
“And what, bhikkhus, is the noble truth that is to be fully understood? The noble truth of suffering is to be fully understood; the noble truth of the origin of suffering is to be abandoned; the noble truth of the cessation of suffering is to be realized; the noble truth of the way leading to the cessation of suffering is to be developed.
“Therefore, bhikkhus, an exertion should be made to understand: ‘This is suffering.’… An exertion should be made to understand: ‘This is the way leading to the cessation of suffering.’”