Passage 22

Tamoguṇa, because it does not know true Jñāna, has such qualities as taking one thing for another and, being devoid of Jñāna, binding carelessly through sloth.

Sattvaguṇa is suppressing the causes of sorrow, grief and the like, and engaging in the matters that are means to happiness.

It is the oneness of the three above that bestows purity. How so? If a lamp is placed on a clear piece of glass of a single colour, its radiance appears pure and bright. But if it is placed on some pieces of glass of many colours, it appears in many colours, its radiance dimmed. And if it is placed in an earthen pot, it shines more darkly still. Though the lamp is one, its light changes with the upādhis that hold it. In the same way, understand that sattvaguṇa is like a lamp placed on a clear piece of glass; that rajoguṇa is a lamp without brightness, appearing in many colours, like a lamp placed on pieces of glass of many colours; and that tamoguṇa remains in darkness, like the lamp in an earthen pot. So one may think of sattvaguṇa as ‘Ātma Jñāna’; of rajoguṇa as not radiant in form like sattvaguṇa, a lamp filled with the smoke of impure feelings, and not only that, one that keeps flickering without steadiness; and of tamoguṇa as a lamp covered with soot, full of darkness. That is, the first is radiance, the second is smoky and flickering, and the third is covered with soot.