There are ascetics and brahmins who truly understand about suffering, its origin, its cessation, and the path. They don’t gaze up at the face of another ascetic or brahmin, thinking: ‘Surely this worthy one knows and sees.’

Suppose there was an iron pillar or an Indra’s pillar with deep foundations, firmly embedded, imperturbable and unshakable. Even if violent storms were to blow up out of the east, the west, the north, and the south, they couldn’t make it shake or rock or tremble. Why is that? It’s because that Indra’s pillar is firmly embedded, with deep foundations. In the same way, there are ascetics and brahmins who truly understand about suffering, its origin, its cessation, and the path. They don’t gaze up at the face of another ascetic or brahmin, thinking: ‘Surely this worthy one knows and sees.’ Why is that? It’s because they have clearly seen the four noble truths. What four? The noble truths of suffering, its origin, its cessation, and the path.

That’s why you should practice meditation …”

Linked Discourses 56.40 4. In a Rosewood Forest Looking For a Debate