Defilements

"Defilements" (Pali kilesa, Sanskrit kleśa) are the troubling states of mind that, in Buddhist teaching, cloud our clarity, drive us to act in harmful ways, and keep us bound to suffering. The word pictures something that stains or muddies an otherwise clear mind — like dirt in clear water. They are not sins committed against a divine lawgiver; they are unhealthy mental habits that hurt us and others and that, the tradition says, can be gradually washed away through training.

At the root are three, often called the "three poisons." The first is greed (lobha) — craving, grasping, the endless wanting of more. The second is hatred (dosa) — aversion, anger, ill will, the pushing-away of what we dislike. The third is delusion (moha) — confusion or ignorance, especially not seeing clearly how things really are. From these three sprout all the rest: jealousy, conceit, anxiety, stubbornness, and so on. In this view, harmful behavior isn't random; it grows from these inner roots, while wise and kind behavior grows when the roots are weakened.

This is a shared concern across all Buddhist traditions, though some schools map the defilements in finer detail and add further categories — for example, the deep-seated "obscurations" that, in Mahāyāna thought, must be cleared away for full awakening.

The outlook here is hopeful, not condemning. Buddhism does not teach that people are essentially wicked. The defilements are seen as removable — more like passing visitors than a permanent fixture of who we are. The whole path of ethics, meditation, and insight is aimed precisely at loosening and finally uprooting them. When greed, hatred, and delusion are fully extinguished, what remains is the deep peace and freedom called nirvāṇa.