In Buddhism, one of the three poisons of the mind, and one of the three roots of suffering. The Tibetan word dod-chags and the Sanskrit raga can also be translated as attachment or lust.
"Let us think for a moment of the humanoid multitudes that populate the face of the earth. They suffer the unspeakable. They are victims of their own errors. If they did not have ego they would not have those errors, nor would they suffer the consequences of such errors. The unique thing required in order to have the right to true happiness is, before all, to not have this ego. Certainly, when psychic aggregates, the inhuman elements that make us so horrible and evil, do not exist within us, then the payment of Karma is non-existent. Thus, the result is happiness."