Excerpt:
Those who constantly strictly adhere to the commandments of yama and niyama, will achieve a transformation of the qualities of the natural emotional states. They will qualitatively advance in the order of creation, rise above the sphere of beings who are suffering and unhappy into the sphere of beings living harmoniously. Then they will even cross the boundary of the physically limited beings and reach the sphere of the supersensory existence. By that, they will prove for themselves, that they can and have to solve the problem of an unhappy life only by putting the transformation, or change of thought and feeling, into practice. They will realise that, by the constant moral purification and hygiene understood in the sense of niyama, they are raising themselves among gods, into the sphere of pure and blissful experiencing, to the place where their intuition itself suggests to them an idea of the highest happiness.