The Gunas Sattva, Rajas and Tamas belong to the intellect and not to the Self. Through Sattva one should subdue the other two. And subdue Sattva also by means of Sattva itself – i.e. one should control the functions of truthfulness, compassion, etc. through that of absorption in Brahman.
Through developed Sattva a man attains to that form of spirituality which consists in devotion to the Supreme Soul. Through the use of Sattvika things Sattva is developed; this leads to spirituality.
That superior form of spirituality which is brought on by an increase of Sattva destroys Rajas and Tamas. And when both of these are destroyed, iniquity, which has its rise in them, is also quickly destroyed.