Now in the Dhammakaka-pavatana-sutra, he goes on to describe what are known as four noble truths. Now this, monks, is the noble truth of suffering, or dukkha. Birth is suffering, aging is suffering, death is suffering, sorrow, lamentation, pain, distress, and despair are suffering. Association with the unbeloved is suffering, separation from the loved is suffering. Not getting what is wanted is suffering. So the first noble truth, he's describing this notion of dukkha, this notion of suffering. And later on, he goes to expound on it, saying it's not just traditional notions of sorrow, lamentation, pain, distress, but it's also trying to desire or pursue anything that is temporary in nature will eventually lead to dukkha, or suffering.