Tiantai understands suffering within the broader vision of the Lotus Sutra and the doctrine of the Threefold Truth. On the conventional level, suffering is fully acknowledged as a real feature of conditioned existence, arising through ignorance, craving, and karmic activity. It manifests in the many forms of human and non-human experience, and calls for ethical discipline, meditative practice, and insight. Yet this same suffering is also seen as empty of any fixed, independent essence; it has no unchanging core that could bind beings forever. The Middle Truth holds these two perspectives together, affirming that suffering is both experientially real and ultimately empty, neither to be clung to as solid nor dismissed as illusory. This integrated vision allows Tiantai to treat suffering with great seriousness while refusing to grant it ultimate authority over the destiny of beings.

Within this framework, suffering is not merely a problem to be escaped but a field in which awakening can unfold. Because all dharmas interpenetrate and all beings possess Buddha-nature, even the most painful states already contain the presence and potential of buddhahood. The very experience of duḥkha can become a catalyst for wisdom and compassion, prompting beings to seek liberation and to recognize the shared vulnerability of all life. Tiantai thus regards the Buddha’s teachings on suffering—such as the Four Noble Truths—not as final pronouncements, but as skillful means that guide beings step by step toward the Lotus Sutra’s assurance that all are destined for enlightenment. When contemplated through the lens of the Threefold Truth and the mutual inclusion of all realms, suffering is gradually transformed from a seemingly absolute burden into a dynamic condition that can reveal the path itself.