reference: Sri Aurobindo and the Mother, Our Many Selves: Practical Yogic Psychology, Chapter 5, Organisation, Harmonisation, Unification, pp. 136-137
This episode is also available as a blog post at https://sriaurobindostudies.wordpress.com/2023/11/14/the-inconstancy-of-the-external-nature-under-the-influence-of-the-action-of-the-three-gunas/